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  1. View Classified Waversa EXT-2 Newly Released Item for USA markets. EXT-2 is $1500 introductory sale pricing! USA only. Please email for other regional representation; we will provide your regional contact representative. HDMI and LAN Ethernet are in stock. Special order USB and other formats. HDMI is excellent for I2S and Video applications. New WAVERSA SYSTEMS release - the LAN-EXT2 and HDMI-EXT2 passive filter unique to the industry. While the details remain ambiguous due to patent conditions, this military-based technology has proven effective in digital audio reproduction. "This module 'forms an electric field and a magnetic field to remove RFI noise from the LAN cable and noise generated by the digital signal line itself.'" Collin Shin, Waversa Systems. "Waversa’s WLAN Isolator showed a clear sound quality improvement effect by removing electromagnetic noise from a LAN cable. The biggest change was that the stage background became quieter and every note defined, followed by a wider sound stage, an increased sense of space, and energy; especially the low-frequencies were revived." by Kim Pyeon Audio Columnist, HiFi Club. These passive filters are supplied with a short-run cable placed between the filter and the destination component of the signal path. The LAN filter itself has no directionality. "...more resolution of fine detail and speed/dynamics: more "alive" and bass is tighter and punchier." The benefit is optimal when positioned between commercial equipment and audiophile-engineered equipment. The first 50 units are available in N. America at an introductory price of $1500 each. The benefits are IMMEDIATE and not subtle as has been the universal feedback so far. Read more about the technology here: Newsletter Summary! https://www.kevalinaudio.com/extisolators Please note: HDMI, COAX, BNC, AES/EBU, USB and LAN Ethernet are available, please specify. Seller kevalin Date 09/03/23 Price 1,495.00 USD Category Accessories  
  2. View Classified Waversa Systems Incorporated HDMI EXT-1 Passive Filter (Discontined item, final sale) LAN, USB, HDMI, COAX and BNC - available at closeout pricing. $700. plus shipping. Payment by personal check, Wise, Zelle. New WAVERSA SYSTEMS release - HDMI-EXT1 in addition to the LAN-EXT1 and USB-EXT1 passive filter unique to the industry. While the details remain ambiguous due to patent conditions, this military-based technology has proven effective in digital audio reproduction. "This module 'forms an electric field and a magnetic field to remove RFI noise from the LAN cable and noise generated by the digital signal line itself.'" Collin Shin, Waversa Systems. The Waversa HDMI EXT-1 are guaranteed to improve video image. Noted improvement HDMI digital audio improvement as well. Very popular. I was impressed by the improved overall video image with contrast, less noise with improved sharpness, and an inky black background. These are offered for a 30 day money back guarantee or a demo trail. Special introductory pricing. Email with questions. While the EXT is bidirectional, the supplied short HDMI cable is between the EXT and the TV or Music Player. https://www.whatsbestforum.com/threads/waversa-systems-current-production-line-a-central-and-current-list-of-published-reviews.31222/ "Waversa’s WLAN Isolator showed a clear sound quality improvement effect by removing electromagnetic noise from a LAN cable. The biggest change was that the stage background became quieter and every note defined, followed by a wider sound stage, an increased sense of space, and energy; especially the low-frequencies were revived." by Kim Pyeon Audio Columnist, HiFi Club. These passive filters are supplied with a short-run cable placed between the filter and the destination component of the signal path. The LAN filter itself has no directionality. "...more resolution of fine detail and speed/dynamics: more "alive" and bass is tighter and punchier." The benefit is optimal by filter positioned between commercial equipment and audiophile-engineered equipment. The first 50 units are available in N. America at an introductory price of $1000 each. ($1600 if purchased as a set.) The benefits are IMMEDIATE and not subtle as been the universal feedback so far. Download .pdf Review: https://www.whatsbestforum.com/threads/waversa-systems-current-production-line-a-central-and-current-list-of-published-reviews.31222/ https://audiophilestyle.com/forums/topic/63445-waversa-lan-isolator-ext1/#comment-1160933 Please note: HDMI, COAX and AES versions will be released this summer in addition to the already available USB and LAN Ethernet.n Demo trials of any of these units, please email at [email protected] Seller kevalin Date 05/09/22 Price 700.00 USD Category Accessories  
  3. View Classified Waversa Systems - EXT Reference Series (LAN, USB, COAX, BNC, AEX/EBU and HDMI) New WAVERSA SYSTEMS release - LAN-EXT REFERENCE in addition to the LAN-USB REFERENCE passive filter unique to the industry. While the details remain ambiguous due to patent conditions, this military-based technology has proven effective in digital audio reproduction. "This module 'forms an electric field and a magnetic field to remove RFI noise from the LAN cable and noise generated by the digital signal line itself.'" Collin Shin, Waversa Systems. The REFERENCE series demonstrates more advanced technology than the EXT-1 One new owner from Europe stated this on What's Best Forum: I only listened to both filters for a short while and after I had recovered for the shock of the price differential it was a no-contest decision. As I said the reference benefit was a wow. The sound stage was bigger, the control and tightness of the Bass were impressive with more detail and a lower noise floor. So clean and smooth." Expect a settling-in time of 50 hours. For its size, it is surprisingly heavy. Over 3kgs. It feels good in the hand. I agree with the comments here about the Reference LAN Isolator, including in relation to the earlier released LAN Isolator. The difference between the two is great, the Reference providing greater benefits in all parameters. The Reference is a keeper; I couldn't go back to the original. Excerpts from other reviews from the series: "Waversa’s WLAN Isolator showed a clear sound quality improvement effect by removing electromagnetic noise from a LAN cable. The biggest change was that the stage background became quieter and every note defined, followed by a wider sound stage, an increased sense of space, and energy; especially the low-frequencies were revived." by Kim Pyeon Audio Columnist, HiFi Club. These passive filters are supplied with a short-run cable placed between the filter and the destination component of the signal path. The LAN filter itself has no directionality. "...more resolution of fine detail and speed/dynamics: more "alive" and bass is tighter and punchier." The benefit is optimal by filter positioned between commercial equipment and audiophile-engineered equipment. Download .pdf Review: https://www.whatsbestforum.com/threads/waversa-systems-current-production-line-a-central-and-current-list-of-published-reviews.31222/ Please note: HDMI, COAX, BNC and AES versions are available in addition to the USB and LAN Ethernet. Seller kevalin Date 01/09/22 Price 3,750.00 USD Category Computers / Networking Gear  
  4. Waversa Systems - Bridge Standard. New. Digital-Digital converter. View Classified Introducing an industry FIRST. The most advanced digital-digital processor, designed and manufactured in-house, improves the digital stream and converts any digital standard to any other digital standard featuring complete versatility. This unit is the WBRIDGE STANDARD The WBRIDGE has three different configurations: WBRIDGE Basic - LAN Ethernet only featuring the most advanced Ethernet switch technology and digital-digital processing in the industry. $4000. WBRIDGE Standard - Additional features of on-the-fly conversion of digital signal standards. $5500. WBRIDGE Multi - yet to be released featuring customizable additional 3-way digital crossover. $7000. https://www.whatsbestforum.com/forums/waversa-audio.401/ MAIN FEATURES • Complete noise protected hardware construction. • All audio interface with cross conversion. • ROON (to be certified) • DLNA • AirPlay • Waversa Smart Battery Charger System • 4x Battery operated Audio Grade Ethernet ports . • Clock input/output • 4x 18650 Lithium Battery Slot • Built-in Linear Power Supply EXCLUSIVE TECHNOLOGIES • WNDR - Waversa Network Direct Rendering • WAP – Waversa System Processor (Basic: 5, Standard: 10 (5+5)) • WAP/X - Waversa System Processor Extension • Dynamic Range Support Levels 1 - 5 PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • BASIC – 4 x Audio Grade Ethernet ports (with Native DSD) • STANDARD – As BASIC plus Digital Coaxial input/output, USB-B input USB-A output, Toslink input/output, AES/EBU and HDMI input/output (up to 4K pass through, ARC) • MULTI As Std plus AES/EBU (1 x Input, 2 x Output), USB-B Input, USB-A output, 3-way active crossover • I/O: Micro SD (Updates only) • Dimension: 300 x 250 x 45 mm • Weight: 4.0 kg / - 8.8 lbs. • Power supply: 90~120 VAC/180~240 VAC@50~60Hz SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 192KHz •USB/NET: PCM 32 Bit 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz : DSD64, DSD128, DSD256 •ROON: FLAC, WAV, DSF, DFF, AIFF, ALAC, AAC, MQA •UPnP/DLNA Renderer: WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz SPECIFICATIONS •AM3358 with TI OMAP 1GHz ARM Cortex A8 •OCXO Clock (Upgradable through external sync clock) •Built-in Linear Power Supply Seller kevalin Date 01/09/22 Price 5,500.00 USD Category Digital to Digital Converters  
  5. View Classified Waversa Systems - Bridge Basic. New. Ethernet Switch and digital processor - $4000 Introducing an industry FIRST. The most advanced digital-digital processor, designed and manufactured in-house, improves the digital stream and converts any digital standard to any other digital standard featuring complete versatility. This unit is the WBRIDGE BASIC - ETHERNET SWITCH and DIGITAL PROCESSOR The WBRIDGE has three different configurations: WBRIDGE Basic - LAN Ethernet only featuring the most advanced Ethernet switch technology and digital-digital processing in the industry. $4000. WBRIDGE Standard - Additional features of on-the-fly conversion of digital signal standards. $5500. WBRIDGE Multi - yet to be released featuring customizable additional 3-way digital crossover. $7000. https://www.whatsbestforum.com/forums/waversa-audio.401/ MAIN FEATURES • Complete noise protected hardware construction. • All audio interface with cross conversion. • ROON (to be certified) • DLNA • AirPlay • Waversa Smart Battery Charger System • 4x Battery operated Audio Grade Ethernet ports . • Clock input/output • 4x 18650 Lithium Battery Slot • Built-in Linear Power Supply EXCLUSIVE TECHNOLOGIES • WNDR - Waversa Network Direct Rendering • WAP – Waversa System Processor (Basic: 5, Standard: 10 (5+5)) • WAP/X - Waversa System Processor Extension • Dynamic Range Support Levels 1 - 5 PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • BASIC – 4 x Audio Grade Ethernet ports (with Native DSD) • STANDARD – As BASIC plus Digital Coaxial input/output, USB-B input USB-A output, Toslink input/output, AES/EBU and HDMI input/output (up to 4K pass through, ARC) • MULTI As Std plus AES/EBU (1 x Input, 2 x Output), USB-B Input, USB-A output, 3-way active crossover • I/O: Micro SD (Updates only) • Dimension: 300 x 250 x 45 mm • Weight: 4.0 kg / - 8.8 lbs. • Power supply: 90~120 VAC/180~240 VAC@50~60Hz SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 192KHz •USB/NET: PCM 32 Bit 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz : DSD64, DSD128, DSD256 •ROON: FLAC, WAV, DSF, DFF, AIFF, ALAC, AAC, MQA •UPnP/DLNA Renderer: WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz SPECIFICATIONS •AM3358 with TI OMAP 1GHz ARM Cortex A8 •OCXO Clock (Upgradable through external sync clock) •Built-in Linear Power Supply Seller kevalin Date 01/09/22 Price 4,000.00 USD Category Digital to Digital Converters  
  6. View Classified Waversa Systems - Bridge Standard. New. Digital-Digital converter. Introducing an industry FIRST. The most advanced digital-digital processor, designed and manufactured in-house, improves the digital stream and converts any digital standard to any other digital standard featuring complete versatility. This unit is the WBRIDGE STANDARD The WBRIDGE has three different configurations: WBRIDGE Basic - LAN Ethernet only featuring the most advanced Ethernet switch technology and digital-digital processing in the industry. $4000. WBRIDGE Standard - Additional features of on-the-fly conversion of digital signal standards. $5500. WBRIDGE Multi - yet to be released featuring customizable additional 3-way digital crossover. $7000. https://www.whatsbestforum.com/forums/waversa-audio.401/ MAIN FEATURES • Complete noise protected hardware construction. • All audio interface with cross conversion. • ROON (to be certified) • DLNA • AirPlay • Waversa Smart Battery Charger System • 4x Battery operated Audio Grade Ethernet ports . • Clock input/output • 4x 18650 Lithium Battery Slot • Built-in Linear Power Supply EXCLUSIVE TECHNOLOGIES • WNDR - Waversa Network Direct Rendering • WAP – Waversa System Processor (Basic: 5, Standard: 10 (5+5)) • WAP/X - Waversa System Processor Extension • Dynamic Range Support Levels 1 - 5 PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • BASIC – 4 x Audio Grade Ethernet ports (with Native DSD) • STANDARD – As BASIC plus Digital Coaxial input/output, USB-B input USB-A output, Toslink input/output, AES/EBU and HDMI input/output (up to 4K pass through, ARC) • MULTI As Std plus AES/EBU (1 x Input, 2 x Output), USB-B Input, USB-A output, 3-way active crossover • I/O: Micro SD (Updates only) • Dimension: 300 x 250 x 45 mm • Weight: 4.0 kg / - 8.8 lbs. • Power supply: 90~120 VAC/180~240 VAC@50~60Hz SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 192KHz •USB/NET: PCM 32 Bit 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz : DSD64, DSD128, DSD256 •ROON: FLAC, WAV, DSF, DFF, AIFF, ALAC, AAC, MQA •UPnP/DLNA Renderer: WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz SPECIFICATIONS •AM3358 with TI OMAP 1GHz ARM Cortex A8 •OCXO Clock (Upgradable through external sync clock) •Built-in Linear Power Supply Seller kevalin Date 01/09/22 Price 5,500.00 USD Category Digital to Digital Converters  
  7. View Classified Cheap Tricks! Alan Maher (AM Designs), deeply discounted, we moved. Listed below are assorted 'tweaks' in descending order of effectiveness - perhaps approaching voodoo. We moved and have an assorted quantity of each. $20 per unit plus shipping. The Alan Maher Designs Quantum Plug-In 2.0 is a conductive-based RFI/EMI parallel filter design. 4 units "Our philosophy is we don't just treat the last 6 to 12 feet of your home at one centralized location. If you went around your home and counted the many electrical outlets and light switches that are installed, you would have an equal amount of potential noise sources. RF enters the electrical phase through open outlet receptacles, oxidized wiring and contact surfaces, and voltage instability. A typical home has about 150 to 200 potential noise sources, all ringing at the same time throughout the electrical phase. It is virtually impossible to address even 10% of the combined noise at a single centralized filtering location (not to mention the other 90% of potential noise problems). The most effective way to apply filtering in a home should be over distance; it is simpler to suppress noise at various locations around the home instead of trying to focus at one centralized location. Our methodology is to treat the home as one gigantic power conditioner and allow the entire home to reap the benefit of corrected power factor and harmonic filtering. The QPI 2.0 is our next generation Quantum Plug-In. The QPI design is one of our oldest and most reliable filter designs, developed in the late 1990’s as a simple parallel filter. As digital components evolved over the years, we expanded our research and development to meet the needs of higher resolution circuitry and power factor correction. As part of our Smart Grid technology product development, the QPI series is designed to draw zero wattage from the wall and maximize circuit power factor correction. Our QPI 2.0 is designed for basic universal filtering. The QPI 2.0 is an excellent design to be used with all types of audio and video components. Warranty: 5 year warranty - The QPI 2.0 is designed to last the lifetime of your home. We will replace the QPI 2.0 free of charge up to 5 years if the unit wears out." Dampening plug 2.0 - passive filter reducing noise from switch power supplies and is placed in a socket between your breaker box and the switch power supply. 2 units STILL FOR SALE Dampening plug - Moray James Design. - Same concept. 8 units The AMD Quadcell Antenna is a different type of noise filter. The Antenna couples to RF and low band EM noise that is floating around your room. The Antenna does nothing to clean the A/C in the wall, but it draws in airborne noise floating around the room and routes the noise to earth (or Neutral in our case). 6 units LEFT, 4/10 sold. I bought three, one for HiFi, one for office, and one for bedroom because several people with high health sensitivity to RF said it really helped them. It worked well for my HiFi but not for my health symptoms, so I’m selling the two extra. (The biggest help on my health was getting rid of the DECT cordless phones and replacing with Siemens Gigaset with Eco Mode.) Included are plug adapters in order to handle the American plugs. Keep the hole for the Earth pin to the top of the unit. You only want one QC Antenna for the room; think of it as a star ground to airborne noise. Place 1-3 metres from the HiFi components. Because it routes the noise to neautral/earth, it does help to have some additional treatment for mains noise, which treats neutral and/or earth. From Alan Maher: “You can play with the wall location a little bit when trying to blend with stereo / AV filtering vs. overall Antenna strength interaction. Don't go overboard with close proximity because analogue signals work at different frequency compared to digital signals...and what you don't want to do is a massive suppression because the filter is too close to your turntable which can cause a major suck out ...so if you notice too much top end roll off or suppression just move the Antenna an extra meter or two (up to 3m) from the stereo.” USB + Antenna - gives a grounding plane for the circuit board of the USB. Alan Maker CBF 2.0 - RF absorber (claim) Found no benefit myself. Seller kevalin Date 06/27/21 Price 20.00 USD Category Accessories  
  8. S-Booster Linear Power Supplies (various voltages), with ground mods View Classified Various S-Booster Linear Power Supplies. All were purchased through Many Moon Audio with their grounding modification. 5V-6V - two units, NEW! SOLD 9V-10V - one unit, Used. With OEM box 12V-13V - two units, Used. One SOLD, One Available. Without OEM box SOLD Only 9 V Left. OEM box. Only one tip type. Searching for replacement tips. Retail on these is $350-$400 each with mods. $250 per unit, firm. Plus shipping. [email protected] Seller kevalin Date 06/16/21 Price 250.00 USD Category Accessories  
  9. View Classified Waversa Systems Incorporated WSlim LITE - Streamer and digital amplifier For Sale is a new and updated Waversa SlimLITE Digital Amplifier and DAC/Streamer. Waversa is known for over engineering their equipment that allows at home over the internet updates of both the firmware and the FPGA, future proofing their units as digital technology evolves. Their Waversa Audio Processor is an inhouse design and processes the digital signal unique to the industry. The unit weighs under 10 lbs and is only 8"x12"x3/4" and encompasses almost all of Waversa's current innovative technology. Please see the link to What's Best Forum regarding details about the unique innovations Waversa offers. Supports: DLNA, ROON, WNDR, AirPlay, USB, Coaxial, Optical, FM, and Bluetooth Apt-X Lossless support. Full digital construction. Price to performance, I would rate this unit best value along with the Waversa Mini Headphone Amplifier, both with streaming endpoint capability. https://www.whatsbestforum.com/threads/w-slim-lite-all-in-one-plug-n-play-by-waversa-systems.30904/ I set this unit up with a WiFi to Ethernet RJ45 converter, Allnic ZL5000 power, speaker cables, and LSA-1 Statement monitors. The sound stage was large and deep with impressive imagery. Out of the box, I was floored. This unit would be an ideal gift for anyone who resides in a dorm, apartment, or tiny home. PPBTL = Para Para Bridge Tied Load. PPBTL is eight small output amplifiers merged into one amplifier that as configured produces ultra-low impedance output to handle low-efficiency speakers with low output power. 80 WPC. Uses Waversa in-house designed chip: Waversa Audio Processor, version WAP/X type 3, which has tube harmonic generator mirroring the 1940's Western Electric 300b. MAIN FEATURESAIN FEATURES • 2 Channel Streaming Amplifier • Roon Ready • DLNA Media Server • Airplay • Bluetooth - Apt-X • Wifi (Ethernet dongle required) • FM Tuner (Includes Aerial) EXCLUSIVE TECHNOLOGIES • WAP - Waversa System Processor 24bit 1.5 MHz • WAP-X - Waversa System Processor Extension On/Off • WNDR - Waversa Network Direct Rendering • Dynamic Range Enhancement Levels 1-6 PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • Inputs: Ethernet (with Native DSD), USB-B, Coaxial, Toslink, Bluetooth • Outputs: 2 x 5 Way Binding Posts • I/O: USB-A, Wifi (with dongle), FM Aerial • Dimension: W 300 x L 190 x H 20 mm • Weight: 4 kg / 8.8 lbs. • Power supply: 24V Adapter 90-120V AC / 180-240 VAC @ 50Hz SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 24/192KHz •USB/NET: PCM 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz : DSD64, DSD128, DSD256 Up to 384kHz •ROON: FLAC, WAV, DSF, DFF, AIFF, ALAC, AAC, MQA •DLNA Renderer: WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz •FM – 88.0kHz – 108.0kHz SPECIFICATIONS •Linux 4.0x with 1GHz ARM Cortex A7 Processor •Ultra Low Power Universal Serial Bus Audio Class 2.0 •High Precision Clock Dual MEMS 44.1/48 •Speaker output Std: PPBTL 80w/ch 10Hz - 20kHz (+0.1/-0.5dB) •Speaker output Upgraded Power Supply: PPBTL 120w/ch 20kHz (+0.1/- 0.5dB) AudioNEXT SlimLITE Review.pdf stereoplay_2020-07_Waversa_Wslim_LITE_1__(1)_(1)[1].pdf Waversa SlimLITE -www.lite-magazin.de review.pdf WSlimDS Review_HifiClub - final.pdf Seller kevalin Date 12/06/20 Price 1,600.00 USD Category Music Servers / Streamers
  10. View Classified Waversa Systems Mini Headphone Amplifier/DAC For Sale is a new and updated Waversa Headphone Amplifier and DAC/Streamer. Waversa is known for over engineering their equipment that allows at home over the internet updates of both the firmware and the FPGA, future proofing their units as digital technology evolves. Their Waversa Audio Processor is an inhouse design and processes the digital signal unique to the industry. More about the company and technologies are detailed HERE. The unit retails for $1700. This unit is new and opened for photographing. Price $1600 plus shipping (N. America Only). MAIN FEATURES • Headphone Amplifier with DAC and Streamer • External USB Storage • Roon Ready • DLNA Media Server • Airplay • MQA EXCLUSIVE TECHNOLOGIES • WAP - Waversa System Processor • WAP-X - Waversa System Processor Extension • WNDR - Waversa Network Direct Rendering • Dynamic Range Enhancement Levels 1- 5 PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • Input: Ethernet (with Native DSD), Digital Coax, Toslink, USB-B • Output: Analog 1 x Balanced (XLR), 1 x Unbalanced (RCA • I/O: 2 x USB-A) • Headphone Output: 2.5mm sym., 3.5mm, 6.3mm • Dimension: W 180 x L 150 x H 37 mm • Weight: 2 kg / 4.4 lbs .• Power supply: 24V Adapter 90-120V AC / 180-240 VAC @ 50-60 Hz SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 24/192 •Toslink: up to 24/96 •USB/NET: PCM 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz : DSD64, DSD128, DSD256 •ROON: FLAC, WAV, DSF, DFF, AIFF, ALAC, AAC, MQA •DLNA Renderer: WAV, AIFF, OGG, FLAC up to 24 bits / 192 kHz SPECIFICATION •Linux 3.2x with 1GHz TI OMAP Processor ARM Cortex A8 •Ultra Low Power Universal Serial Bus Audio Class 2.0 •High Precision Dual MEMS 44.1/48 Clock •Headphone Output: XLR 5.600mW (32Ω), 1,4A; RCA 2.800mW (32Ω), 0.7A Nothing off the shelf: Here we are dealing with a technology that converts every incoming signal into a digital PCM signal with an extremely high resolution of 32 bit/384 kHz from the very first moment. The difference between PCM and most other Class D amplifiers starts here, because they usually convert the incoming analog signal into a so called PWM , a pulse -width modulated signal in which the width of a pulse is varied - instead of the amplitude of the incoming analog signal as in PCM. The higher the amplitude, the wider the PWM pulse. This principle is well known: The first to try this technique in a commercial scale product were Sony engineers they used it on the famous and easy to repair TA-N 88. With Waversa, however, the entire signal processing is completely digital, even before the Class D end stage. As if that weren't enough, the Koreans have given some more thought to how the energy efficiency of a Class D amplifier can be used without having to accept its disadvantages such as limited bandwidth and frequency response changes depending on the impedance of the connected loudspeaker. After the analog signal has been converted, it goes into a chip developed and programmed at Waversa, which masters a lot of arithmetic and converts the PCM signal into PWM form. The chip which has this task is called Waversa Audio Processor , short WAP/X. Regarding his arithmetic skills, which are the things that he has mastered all in real time include upsampling to 768 kHz, but also things like improving sound quality by achieving a linear and broadband frequency response up to 160 kilohertz , which is a record for Class D amplifiers. All these calculations take place directly on the chip. Resistors or even coupling capacitors can be saved in this way. And the WAP also does something else: It forces the PWM signal to the clock of the PCM signal - a safe method of eliminating jitter and other interference. His programmers have also given him one last feature, which they are proud to point out: the ability to improve the accuracy of detail and spatial representation, independent of volume. Among other things, this is achieved by reconstructing even-numbered harmonics of real music up to the 32nd harmonic - something that is only possible through various digital processes. The HPA 2, weighing only 2 kilos as a headphone amp, offers all this, only minimally slimmed down in some cases, and even has a symmetrical design. It also serves as a full -fledged streamer and preamplifier, it can handle DSD, MQA, and with external USB memory it also has a NAS function and all this leaves the viewer astonished. German review translated to English .PDF file can be downloaded here: "STEREO_2020-08_Waversa_WminiHPA_WminiAMP_MK2" STEREO_2020-08_Waversa_WminiHPA_WminiAMP_MK2 (2) (2).pdf Seller kevalin Date 12/06/20 Price 1,600.00 USD Category Headphone Amplifiers
  11. View Classified Empirical Audio Dynamo USB linear power supply Paul Hynes/Steve Nugent design 5V USB Linear Power Supply. This is a new item. LPS can handle up to 4 A but has a 3 A fuse. Best of both worlds. Having owned the entire Empirical Audio product line throughout the years, his power supplies have a high current reserve for rapid demand and optimal performance. The upper USB port is signal in and the lower USB port with cable is signal out. $900 new, $650 shipped worldwide, PayPal, or bank transfer. Seller kevalin Date 12/02/20 Price 650.00 USD Category Power Supplies / Power Products
  12. View Classified Waversa Systems Incorporated Amp 2.5 MKII class D digital integrated amplifier Waversa Systems has taken a unique approach to music reproduction by producing a mix of high-quality analog tube amplification and phono preamps harmoniously complimenting pure digital streamers, D/A converters, and dedicated Roon Core servers. While we have examined Waversa's unique digital signal processing above in Appendix 25, this technology is also implemented through a different and equally novel approach to amplification, culminating in its PBTL (Para Bridge-Tied Load) output stage. This fully digital amplification technology percolates throughout the entire Waversa solid-state amplifier line, including the WAMP 2.5 MK2, WSlimLITE, WSlimPRO, WMiniHPA, and WMiniAMP. The WAMP 2.5 MK2 is at the heart of the Waversa portfolio as an integrated digital amplifier with enormously high output power. However, if you cringe at the thought of "digital amplifiers," you should now read on especially carefully to understand the Waversa difference. For a summary of this amp offers please read about them under: What's Best Forum Digression: To understand the difference between a Class D amplifier and a "digital amplifier," it is necessary to distinguish the terms PCM and PWM. PCM (Pulse Code Modulation) PCM is a process that converts analog signals into digital signals. It assigns numeric values to the analog signal, the famous ones and zeros that digitally represent the analog signal. The two variables, "word width" and "sampling rate" are decisive for the quality of conversion in the PCM process. The best way to grasp this is to imagine a coordinate system: the horizontal, i.e., the x-axis describes the time course (sampling rate), the vertical, i.e., the y-axis, the amplitude (word width). The sample rate determines the frequency of sampling within a specific time - in the audio sector, this interval is traditionally 1 second. The finer the grid on the x-axis (the higher the sample rate), the more precisely an analog waveform manifests in the x and y coordinates. The second significant quantity to be digitally recorded is the volume of the analog signal. The so called word width defines volume and is expressed in bits. Specifically, the word width determines how many digits the number generated during digitization can have. Usually for audio, 16 or 24 bits are used - rarely 32 or 64 bits. The more digits a sample has, i.e., the higher the number of bits, the more dynamics can be reproduced. So PCM creates a certain number of reading values, each with a certain amount of information. For example, CDs contain digital PCM data with an information amount of 16 bits (either 1 or 0) in each of the 44,100 read values per second (44.1 kHz). An analog signal of 1 second is represented in PCM as a series of 44,100 "read values" (horizontal axis in the coordinate system), each with different "heights" of 16 bits maximum (vertical axis in the coordinate system). PWM (Pulse Width Modulation) PWM is also a method for converting analog signals into digital signals. PWM also represents the analog signal through numeric values. Unlike PCM, however, PWM expresses the analog signal by the width of a pulse and not the extent of a real value. While PCM represents the analog signal's amplitude by the different heights of the read values, PWM varies the pulse width. The ones of each PWM pulse represent the 0 ~ 180 degree part of the sine wave of the analog signal, and the zeros of the PWM pulse represent the 180 ~ 360 degree part of the sine wave. The higher the amplitude of the analog signal, the wider the PWM pulse becomes. Class D The "D" in "Class D" does not refer to "digital," but solely to the order of Class A, Class B, Class AB, and Class C. Class D works with PWM. After direct conversion to PWM, the analog signal is usually amplified by a switching regulator and an output stage (instead of analog amplifying elements such as transistors or vacuum tubes) using a delta generator. The amplification is achieved by varying the switching time; it depends on the width of the PWM signal (see above). The amplitude and frequency of the PWM signal are constant; the music information is exclusively in the pulse width. Therefore, Class D amplifiers are also called switching amplifiers. Finally, the amplified PWM signal is "smoothed" by a low-pass filter in the output stage, i.e., converted back into an analog signal and passed on to the loudspeaker. The Waversa WAMP 2.5 MK2 has an entirely digital signal processing path before the actual class D amplifier. The WAMP 2.5 MK2 converts all analog input signals into PCM format via a high-performance 32-bit A/D converter and an FPGA-based (Field Programmable Gate Array, a programmable digital device) WAP (Waversa Audio Processor) chip, which then converts the PCM signals into PWM format. PWM conversion is only one of many tasks of the WAP, which is also used in Waversa’s D/A converters and streamers. In the course of signal processing, WAP and the WAP/X algorithms improve the sound quality, ensure a linear frequency response, and increase the resolution by mathematical calculations directly on the chip instead of using lossy analog methods like resistors and coupling capacitors. So how does the Waversa WAMP 2.5 differ from "normal" amps? 1. Higher resolution: The analog signal is converted by A/D conversion into a digital PCM signal with high resolution (32 bit / 384 kHz). This is the most crucial difference from other Class D amplifiers, which convert the analog signal directly to PWM. The Waversa audio processor then samples the PCM signal up to 1.5 MHz, a critical step in maximizing resolution before further processing. The extremely broadband frequency response of the Wamp 2.5 MK2 from 0Hz to 160kHz is one of the upsampling results. 2. Transfer of the PCM clock to PWM via WAP: PWM has the inherent disadvantage of not having a digital clock signal. However, the WAP chip evaluates the PCM time interval and then passes this information on during the conversion to PWM. 3. Improved frequency response linearity through WAP: The WAP chip's mathematical calculations guarantee a considerably higher resolution and a linear frequency response. All algorithms are executed in real-time directly on the WAP chip. The amplitude boosting problem in the medium frequency range, one of the most significant disadvantages of analog amplifiers, is entirely solved by the WAP chip. 4. Further digital corrections are made on the WAP chip to improve the detail and the spatial representation regardless of the volume. Analog amplifiers cannot achieve this, so here is a unique advantage of WAP technology. The two most essential corrections based on WAP are: a. WUS (Waversa Ultra Sound): With the help of the unique signal processing of the WAP chip, resolution, spatial impression, and airiness can be varied. The user can choose between three modes creating varying high frequency extension. b. WAP/X: Audio tubes have a distinctive, pleasant sound signature, particularly good at conveying delicate information about even-numbered harmonics. These harmonics are lost to a great extent during digitalization. WAP/X is an algorithm based on the overtone behavior of audio tubes, which reconstructs the 2nd, 4th, and 8th harmonics of real music lost during digital recording or the digitization of analog recordings. Thus, digital music also sounds touchingly real, vividly spatial, and natural. 5. PBTL (Para-Bridge-Tied Load): The WAMP 2.5 MK2's enormous output power of 400 Watts into 4 Ohms is made possible by a parallel structure of four "normal, inverse, normal and inverse" phase output amplifier modules per channel (the WAMP 2.5 MK2 has an authentic dual-mono design). In this way, the gain factor in each of the individual output amplifiers can be reduced, thus reducing by multiples the conventional artifacts (a hardened not very subtle sound in bridge mode), which can result from a (too) high gain factor. We hope this explanation has succeeded in making it clear that the WAMP 2.5 MK2 is not just a generically designed 'digital' amplifier looking to extract performance through quality componentry or good execution, as is the norm among its competitors, but something radically different: it harnesses the full power of the Waversa Audio Processor (WAP) to create a pure digital amplification product. The WAMP2.5 MK2 goes to the heart of the goal of Waversa to fully utilise its unique digital technology, with its design percolating throughout the entire Waversa amplifier line, including the WSlimLITE, WMiniHPA, and WMiniAMP This is a used unit but at full current manufacture specifications version MKII and certainly capable of driving any speaker. Please note two light scratches at the top corner of the chassis on each side - likely from the footers of another component placed on top. I would rate this an 8/10 condition. Retail is around $7500. MAIN FEATURES • Digital Integrated Amplifier • Monorail Construction EXCLUSIVE TECHNOLOGIES • High-precision 32 bit / 384 kHz A/D converter • WAP - Waversa System Processor 32bit 1.5MHz PHYSICAL CHARACTERISTICS • Chassis: Aluminium • Colour: Silver • Inputs: 2 x Balanced XLR, 3 x Single Ended RCA, 1 x Coaxial Digital • Outputs: 2 x 5 Way Binding Post • Dimension: W 440 x L 330 x H 145 mm • Weight: 13 kg / 28.6 lbs. • Power supply: Built in 180~240 VAC @ 50~60Hz S SUPPORTED AUDIO/VIDEO FORMATS •COAX: up to 24/192KHz SPECIFICATIONS •LinuxHigh precision 32bit ADC and PWM processing •FPGA based Waversa Audio Processor (WAP) type 2 applied with built-in 768KHz high-end upsampler •Ultra Low Power Universal Serial Bus Audio Class 2.0 with High Precision Clock •Digital PWM based class D amplifier with PBTL 200W per channel 8 Ohm •8 Level Display Brightness Control Seller kevalin Date 12/02/20 Price 4,500.00 USD Category Amplifiers
  13. One of the finest CD/SACD players on the market, a favorite of John Atkinson at Stereophile. Reviewers from Stereophile and The Absolute Sound have favored this player since it was released; with the apodizing filter application developed by Ayre (see white paper on ringing) this player finally brought CD/SACD sound to the highest level. The Ayre is truly built like a tank, renowned for its transparency and plays flawlessly. Width and depth of soundstage, extraordinary dynamics, silent as the tomb, slam and dynamic range, you will not EVER need another CD/SACD player in your lifetime. It has been rated a Class A Stereophile product since its release. This unit is in flawless condition, it has no imperfections or blemishes whatsoever. Zero laser performance issues. Panasonic does make a laser transport replacement that can be swapped out should this one eventually wear out. Contact Ayre for details. MP ( minimum phase ) and the transformer isolation upgrades - were completed 4th quarter, 2019. This unit provides up to 8x oversampling. AES digital output Balanced XLR and Unbalanced RCA output. Format: red book CD, SACD, DVD-Audio, DVD 120V power supply. If power supply is compatible to your region, I will ship internationally.
  14. Over the years I have become very familiar with the Waversa product line and have auditioned or owned most of their equipment at one time. Their approach to digital audio in unique and I have enjoyed watching this technology evolve. One challenge I enjoy is tying quality with affordability and Waversa may have done just this with their new sub-$5000 DAC, the DAC3c (compact). The article below was originally written in Japanese and pulled from the Waversa dealer for most of Asia. www.waversasystems.com. To my understanding, this is a private dealer representing Waversa, which is based in South Korea. With the help of Google translate and further editing including my experience with this dac and their product line, I am re-publishing this summary. If anyone knows of another DAC manufacturer with a similar approach or their own unique approach, I would be very interested in learning about them.A different approach to digital processing unique to Waversa and why:Generally, upsampling uses an FIR filter (Finite Impulse Response, fixed-form impulse response filter). Interpolation (interpolation) is performed during the upsampling process to correct the sound quality. FIR Interpolation is a mathematical calculation that estimates and fills between digital points.In the case of the Saber ES90x8 series, such FIR filters are basically built-in, and DAC manufacturers can easily perform upsampling. However, in the case of incorrectly made upsampling, the sound becomes thinner, and it is often proved that listening with the upsampling function turned off sounds better.WaversaSystems uses a proprietary WAP instead of the basic FIR filter included in the DA chip. Waversa Audio Processor (WAP) is designed inhouse with a multi-stage structure including a number of proprietary FIR filters and IIR filters (Infinite Impulse Response Filter) and performs high-resolution upsampling. This high-resolution upsampled signal is processed through thousands of iterative calculations using state-of-the-art source estimation algorithms to reduce digital errors and create a waveform that is as identical as possible to the original analog signal. This is the role of WAP.WAP (Waversa Audio Processor) Hardware method with very low jitter rate and accurate timing Proprietary solution from digital input to processor Dual WAP captures all signals on the optimized route Centralized clock management in the signal path Technology to minimize Quantization Error Processes huge information up to 32Bit 1.5MHz Highest level signal restoration algorithm by applying medical technology Very few DAC manufacturers have developed their own digital processors because the development of digital processors requires significant understanding and knowledge of digital signal systems and is difficult to develop alone, and most DAC manufacturers use DSPs built into the DAC chip or use off-the-shelf modules. However, some high-end DAC manufacturers, such as CHORD, DCS, and MSB, design digital processors independently with sound quality as the top priority.The software processing method has elements that cause errors because the processing is sequential and complicated. On the other hand, in the hardware processing method, since signal processing is performed once at the same time, there is no room for jitter, and the timing of the audio signal is exactly the same.WaversaSystems digital processors are processed in hardware, not software-based digital processing, so they are processed simultaneously in a simple, optimized path resulting in fewer errors, and the timing of the audio signal is handled more accurately.Modular design vs. proprietary signal path system:Most DAC manufacturers produce modularized DAC components individually arranged and combined allowing for ease of development and production with easy with off-the-shelf chips. As a result, only a few DAC manufacturers have their own signal systems, and DACs of those brands are priced at more than $10,000. WDAC3C is a signal path system specification originally developed by WaversaSystems. All signal processing has been optimized, including a proprietary USB input circuit, network renderer, digital processor and DAC, and is controlled and operated precisely by a clock system unified by a digital processor (WAP). This method has a lower error probability, higher stability, and ideal digital signal processing than the method of circuit design using commercially available modules.Dual WAP captures all signals In order to dramatically increase processing speed and efficiently manage signal processing. The first WAP (P1) processes all input signals, and the second WAP (P2) receives signals processed by P1 on I2S and decodes signals with clocks according to sampling rates. In this way, by assigning a unique role to each digital processor, signal interference is minimized, more sophisticated clock management is performed, and sound quality benefits from accurate signals that do not compromise digital signal integrity. The heart of WAP lies in signal restoration. 32Bit 1.5 MHz, processing huge informationThe WDAC3C does not use the FIR built into the general ES9038, but uses multiple stages of FIR with proprietary logic to perform high-resolution upsampling. Instead, the heart of the technology is included in WAP, and the newly developed WAP has greatly increased the amount of data that can be processed. This new WAP has succeeded its predecessor (24Bit / 368kHz) with 32Bit 1.5MHz data processing. In comparison,16Bit, 65,532 digital signal processes are performed, and in 32Bit, there are 4 billion digital signal processes, and the sophistication of signal processing is dramatically increased. This has made it possible to generate digital signals that are closer to analog, and the subsequent digital restoration technology has become more accurate. To put it simply, the improved internal processing speed of 32Bit 1.5MHz is similar to upgrading from DVD quality to 4K quality. This dramatically increases the detail and dynamic range that can be expressed.WAP sounds more natural as you step up WAP's signal restoration algorithm technology increases in sophistication as the numerical value of the calculation accuracy increases. This is managed by WAP Level. WDAC1 has one stage of WAP, WDAC2 has three stages, WDAC3 has five stages, and WDAC3C has nine stages. This WAP is a computation that is processed at the digital stage and can be upgraded by connecting devices.WCORE and WRouter are WAP level 3, yet when connected to WDAC3C with WAP level 9, a synergistic effect results and the WAP level is measured at 15. The higher the WAP level, the more sophisticated the processing per unit time, and the better the sound image and detail. And the tone of the instruments is also flexible, natural and easy to hear.In designing and developing a DAC, there are several components that affect sound quality. Several factors, such as the design of the input / output lines, the design of the internal algorithm of the digital processing chip, and the performance of the DA chip, the design of the power supply unit and the design of the analog output unit are directly related to the completeness of the DAC.ES9038PRO is a flagship model consisting of 8 channels that features 32-bit processing and ESS patented 32-bit HyperStream DAC technology. The HyperStream architecture has excellent sound quality and very low intermodulation distortion characteristics and has superior audio characteristics compared to general competitors using the delta-sigma architecture.Digital processing of WDAC3C: The performance of the DAC chip is also very important for the DAC, but it is not the only one. If DA chip performance is important, all DACs with the same DA chip should sound the same. The choice of a DAC chip is important, but the consequences will depend entirely on how the DAC chip is used. The WDAC3C uses only the most basic functions by bypassing the ES9038PRO and achieves excellent sound quality through original and unique designs for both the input and output sections. Two of them are WAP and WMLET.WDAC3C has introduced two unique technologies from WaversaSystems to make optimal use of the ES9038PRO with a 32-bit 8-channel DAC.One is WAP, a source estimation algorithm that operates at 32Bit 1.5MHz. The other is Range Separation Technology (WMLET). Channel separation technology for sound range and (WMLET – Waversa Multi-Layer Energy Transfer)Rather than using the commercially available ES9038PRO chip as it is, WDAC3C has an algorithm that passes the circuits of the input stage and the oversampling filter stage and instead uses the WAP chip to process each process individually. It is then passed on to the ES9038PRO by another key technology, the range channel separation technology (WMLET). Range channel separation technology (WMLET-Waversa Multi-Layer Energy Transfer)As the name implies, the auditory frequency band is divided into high, mid-high, mid-low, and low bands at the digital stage for each of the left and right channels, and passed through eight channels of ES9038Pro for processing. In conventional signal processing, the energy is concentrated in the middle band due to the characteristics of the analog element. Instead of 8 channels, only the left and right channels will be processed together, and more energy will be concentrated in the mid-band. To prevent this, WDAC3C distributes the energy evenly for each band and improves the sound quality. The advantage of separating the channels for each range using WMLET is that the WDAC3C has an ingenious technology that regulates energy in four channels per frequency band, thus improving distortion caused by energy bias and reviving subtle musical elements, a band balance that cannot be felt with conventional DACs has been realized. This approach to digital processing is unique only to Waversa products. The energy concentrated in the mid band is evenly distributed, and the band balance is excellent. The resolution increases with each band, taking advantage of the nuances of band separation and natural music. Implementation of a wider music signal dynamic range and broadband frequency reproduction. Natural balance of the sound can be maintained, and the originality of the tone is maintained. WaversaSystems original network renderer board:Due to the characteristics of network players that use computer networks, DACs are exposed to a large number of high-frequency noises that were not found in conventional CD transport and analog devices, and are adversely affected by sound quality. To minimize these noises, WaversaSystems has developed and produced its own network renderer board. The reason why the renderer board is important in network players is that the network renderer board, which is the entrance of the signal, generates a lot of noise inflow and is not designed for high-end sound quality. WaversaSystems network renderer boards are also designed to apply noise filters to LAN or USB ports, operate at high speeds instantaneously and limit the processing speed to minimize generated noise. Renderer module installed by high-end manufacturer CReceiving, restoring, and playing back network data signals requires high quality and accurate digital design techniques. A technology that filters various noises that exist simultaneously with music signals on the network and is transmitted in the same way, and a technology that protects minute data contained in the sound source signal and has a huge number of elements that combine network, digital, and analog Power must be designed and manufactured with a high degree of perfection in a well-balanced manner. WaversaSystems Network Renderer board: Noise-free design (cut off external noise, minimize own noise generation) Optimized path, excellent stability and sound quality benefits Easy setting with Web browser Updates and upgrades to improve sound quality and stability System check by remote support is possible Dedicated protocol can improve sound quality and add various functions WDAC3C's renderer board supports various network protocols (DLNA, RAAT, Airplay, WNDR), and plays an important role in transmitting sound source data without loss so that WaversaSystems' signal transmission processor WAP can achieve the best sound quality. The unique design minimizes bottlenecks and conversion steps, and the optimized path provides stability and sound quality benefits. WNDR (WaversaSystems dedicated protocol) Transmission scheme optimized for continuous signal processing without buffering Protocol with strong immunity to noise Protocol without conversion process by dedicated route Increased WAP level due to interconnection (improved sound quality) WNDR is a protocol originally developed by WaversaSystems. The network renderer mentioned above is a hardware advantage of WDAC3C for network audio, and WNDR is a software-like superior sound quality advantage. WNDR is a protocol dedicated to the transfer of pure music with little buffering and has the special advantage that there is almost no noise during signal transmission and no sound quality distortion occurs.The biggest problem with streaming widely used networks using DLNA is that the standard does not consider continuous audio streaming at all, it is just a standard for packet-based data transmission. In this transmission method, noise is generated during the buffering process during signal transmission resulting in extremely poor sound quality. WNDR is a proprietary protocol developed by WaversaSystems to solve these problems. It has been developed to minimize delays in communication and provide excellent noise immunity. In addition, the WNDR method is a dedicated protocol, so there is no need for a conversion process between protocols, and sound quality can be improved. In addition, WNDR is a more advanced protocol than other protocols and is more immune to noise.Noise generation by network transmission methodThere is also a dispute over how noise is generated in network protocols. On a common shared network, data is not transmitted in a dedicated (exclusive) manner, so it uses a method of moving on a shared network in packet units and buffering the data in packet units. Noise is induced in the process of reading this buffered data. When reading buffered data as shown in the figure, the process of reading and transmitting data with a renderer board or the like occurs intermittently, which causes electrical noise. The stable transfer of continuous information without buffering will be the core technology of the future, and since media integration tends to be parallel to communication, stable clock synchronization without buffering will be achieved. The technology that does this is WNDR, which is a great sound quality advantage. You can tell if there is buffering by unplugging the network cable.In the case of DLNA, music is played continuously for 30 seconds or more, and in the case of ROON RAAT, music is played for several seconds. This means that the buffered music data is being played. However, in the case of WNDR, the music is interrupted almost immediately when the network cable is unplugged. This is because there is no buffering. WNDR, which operates with WaversaSystems DAC, is the only product in the world that operates with a proprietary music data transfer protocol. WNDR produces a synergistic effect when all devices are integrated, and combines with WAP to achieve even better sound quality. When WCORE, WRouter, and WDAC3C are all connected by WNDR as shown in the figure, they will have clear sound quality benefits. In addition to that, it has been raised to the WAP level, achieving higher-end sound quality with higher dimensions.This dac is the newest of their product line and the culmination of years of innovation where the trickle-down theory actually outperforms the rest. My impression: the DAC3c performs better than its big brother and on par with their current flagship dac, if not better.
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