hpm200

Here is the reply that Nad sent the shop, the pricing is in Canadian dollars -------- We don’t have a data sheet for the USB 2.0 MDC card – it is exactly the same as the previous version, but with support up to and including 24/192kHz… is there something specific they are looking for? I would recommend they look at adding the DD BluOS card instead (data sheet attached) it would add - 24/192kHz audio support - Network support (WiFi and hardwired) - Streaming from local and internet music sources - Bluetooth - Support for all audio file formats - MP3, AAC (M4A, MP4), WMA, OGG, FLAC, ALAC (M4A), WMA-L, MQA, WAV and AIFF (AIF, AIFC). - Control via iOS, Android or PC & Mac Pricing on the USB2 card is around 249.99- 299.99 not sure of price going from an old price List. the MDC dd bluos pricing 549.99 might be a little over kill for you. any question let me know

After reading your post I phoned the dealer that I purchased my C390DD from and inquired about this. According to his information that he has available as a Nad dealer this is a module upgrade to replace the USB Module in the rear of the machine that comes stock with the C390DD. He is sending Nad an inquiry to confirm this and get the pricing and details for the upgrade. When I get the email from him with the information, probably early next week I will post the information here.

I would not be surprised if the Nad USB driver requires that the USB cable goes direct from PC to the Nad m51. Try removing the Intona isolator and connecting direct. if that works I would try removing the Nad USB driver and see if the computer than recognizes the Nad through the Intona isolator without the Nad USB driver

Hello chauphuong I downloaded a copy of your Oppo 103 manual to see if there might be some setting that could maybe causing trouble .Haven't read the complete manual but I did see this and I wonder if it might have some bearing in your problem? Due to bandwidth limitations, high resolution audio formats such as Dolby Digital Plus, Dolby TrueHD, DTS-HD High Resolution and DTS-HD Master Audio cannot be sent through the coaxial or optical digital audio output. A reduced resolution version of the same audio trackwill be output instead. To listen to high resolution audio formats in their best quality, please use the HDMI connection if you have a receiver that handles HDMI audio (see page 11) oruse the multi-channel analog outputs if you do not (see page 16).Due to copyright restrictions, SACD audio cannot be sent through the coaxial or optical digital audio output. To listen to SACDs, please use the HDMI or analog audio connections.Due to copyright restrictions and bandwidth limitations, full resolution audio from DVD-Audio Discs cannot be sent through the coaxial or optical digital audio output. To listen to DVD Audio in full resolution, please use the HDMI or analog audio connections. Mike

Hello chauphuong You are not the first to have that problem with the Nad C390DD. A number of people initially had the same problem about the Nad and were talking about it on the different blogs and hifi sites. Some sent the machine back because of this issue. I have to ask did you go into the Nads menu and select Speaker Compensation and set it to the correct impedance? I see that yours are rated for minimum 4 ohms and nominal 6 ohms. If I recall correctly it comes set to 8 ohm by default and can be set from 2 ohms to 8 ohms and it does make a huge difference according to the people who changed to the correct ohm. setting for their speakers.I hope you still have the Nad so you can try that solution. Another thing that I found was that when the machine was new it didn't have the range and tone that it has now, I know some say that there is no such thing as a break in period with stereo equipment but my experience say they are wrong, as time went on , a few month of playing made a real difference and when I first recieved it it had the first firmware version and when I changed the firmware version to version 2.88 that also made a big difference. Hope this helps. Mike

Hello, I have enjoyed reading this thread, there are not many out there pertaining to the NAD C390DD. I am running a desktop computer through it. The computer consists of an Asus Z87-Plus mother board, a 4th Gen Intel I5 CPU , 16 gigs of ram, and a Thermaltake water 2.0 liquid cooling kit. an SSD drive for the C: drive and for digital file storage two 3 terabyte sata drives. An Esi Juli@xte sound card using Asio 2.0 - Esi Juli@xte Jriver ver. 21.xxx for playback and resampling. I found that running the adaptive volume in night mode gives better volume levels. Pioneer PL-514 turntable with an Ortofon red cartridge. Nad PP4 USB Preamp to allow me to rip albums and playback LP’s. I will be purchasing the Nad Preamp module for the C390DD later so the turntable can be ran directly through the C390DD, bypassing the computer. Speakers are a set of Pioneer HPM 200s. For speaker wire I use the the 35 cent a foot speaker wire off the spool that most shops sell. I found by separating the two individual strands there is a surprising improvement in the sound. A friend who used to design speakers and sound systems convinced me to try that rather than spending big bucks on speaker wiring and he was certainly right about it. All the equipment is run through a Surgex XR315 Surge eliminator/power conditioner which has made a definite difference to the sound quality. I also found that by shutting off the onboard sound card via the bios and moving the Esi sound card to farthest pci-e slot away from the computer power supply a lot of computer noise was eliminated. Sometime I plan on removing the power supply to outside of the computer case. The Esi Juli@xte plays back up to 192 khz 64 bit when using a Coaxial S/PDIF cable and though the Toslink connection is rated by the manufacture to play back at only 96 khz, I found that by using a $30.00 Toslink cable, It will playback at 192 khz 64 bit. Esi support has acknowledged that depending on your equipment that this is factual. I am able to resample record playback in 192khz 64 bit even though I am using a Usb preamp. When playing records I have found to get the best quality sound via this Dac I shut off the Equalization in the C390DD and I keep the bass and treble settings in the neutral position at all times and I don’t use any software equalization via Jriver. While I intend to upgrade the computer configuration, the turntable and the preamp as my budget allows, the Nad C390DD along with the speakers will never be sold. The Nad is a great unit and I feel that in terms of bang for your dollar it’s a definite winner.