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James Tanner

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  1. Auraliti PK90 setup

    Have you tried the IP address rather than auraliti-player.local? James
  2. Going from Mac/Amarra to either Bryston or Auraliti

    Good point Bill - I guess all those hours our software engineer worked on the BDP-1 mislead me (LOL). james
  3. Going from Mac/Amarra to either Bryston or Auraliti

    Hi folks, Seems to be a lot of misinformation here so thought I would butt in. Differences between the Bryston BDP-1 and the Auraliti •Bryston does not purchase anything from Auraliti therefore we do not simply mark it up as some have suggested •Different Digital output stage on the ESI soundcard – drivers and transformer replaced •Different power supplies – one for digital section one linear supply for the analog section. •Front panel display so not a ‘dead box’ and no need to be on the network to play your music files •Built in software interfaces (Bryston MAX and MINI-2) to manage attached drives (Playlist etc.) for any device that can see a web browser •Use Linux Demian rather than Voyager – software totally developed by Bryston engineers •4 USB drive inputs (2 on the back 2 on the front) •AES/EBU and BNC Digital outputs – extremely low jitter •The BDP-1 is a NAS so it shows up on the network allowing you to write to NTSF and FAT32 attached USB formatted drives over the wireless network. This feature allows you to transfer your music without having to disconnect the attached USB drive. Demian and Ray from Auraliti were a huge help to me when I started the BDP-1 project and I owe them a lot and their products and ours share some hardware and certainly the same vision of how to best playback digital files but we have gone in different directions on how best to serve our particular customers. The BDP-1 is really much more like the Auraliti L-1000 than the PK100 James Tanner Bryston
  4. Power: A Survey of Gear

    sorry didn't know this was a no-no - how do I delete it? james
  5. Power: A Survey of Gear

    Torus Power ISOLATION Unit The concern Bryston had with a lot of power line conditioners available in the market was that many of them could restrict the current available to the amplifier. An amplifier can draw very high peak current, and wants to 'see' a very low impedance high current source from the power line. In fact, we even stated in our owners manuals not to plug our amplifiers into power conditioners. The Transformer based line conditioners we tested were too small to supply the peak current required and many of them were just Filters and did not provide Isolation -(Isolation means there is no mechanical connection between the outside power grid and your inside system power supply). Also most of the surge protection was done using MOV’s, which are sacrificial and eventually will be destroyed with repeated spikes. Other issues with these MOVs is that they allow much more voltage through before they reacted (typically 300 volts and higher) and they shunt the voltage spikes to ground. So we decided to try and develop a powerline Conditioner, Isolation and Protection unit that would not have the restrictions of the many units currently on the market from an amplifier performance perspective. Benefits of Torus Power Isolation Units: Benefit #1: Very low source impedance and high current for the power amplifier Torus power isolation units present low impedance to any electronic device that is connected to them. A Single 20 amp Torus PIU has an output impedance of 0.2 ohms and can deliver 400 amp peaks (instantaneous current). The 100 amp unit only has .04 Ohms of output impedance. A typical 200 watt audio power amplifier demands 10 amps RMS current from a 120 volt line (1200VA) but may demand up to 50 amp instantaneous peaks. The standard residential wall receptacle can't supply the 50 amp peaks because they typically have higher nominal impedance. A Torus 20 amp PIU plugged into the same wall plug can supply these peak current requirements quite easily. Benefit #2: Power surge protection using Series Mode Surge Suppression rather than MOV's The Torus power products use the finest, most elaborate surge suppression technology available. Series Mode Surge Suppression does not shunt the spike to ground like MOV's do, and therefore the ground is infinitely more stable in a Torus power device. Additionally, most MOV-based surge suppression units allow as much as 300 volts through to the protected components, easily enough to do substantial damage, where as Torus surge suppression has clamping voltage onset of around 2V above peak nominal voltage. Torus units are built to meet 6000 volts, 3000 amps at 1000 repeats standard. Benefit #3: Total isolation from outside power grid: Torus power products provide isolation through its finest designed toroidal transformer between the outside power grid and the devices being protected. Such isolation helps to reject external noise sources such as motors, lights, and dimmers commonly found in the home environment. Torus power products provide noise filtering at a range from approximately 2000Hz to over 1MHz – other regular transformer based products do not start operating until nearly 10,000 Hz. Benefit #4: High Power Capability: There are 15 models of Torus power products available ranging from 2.5 amps to 100 amps and 120/240 Volts. Torus has recently introduced NEMA wall-mount units, which are typically placed at the hydro panel for whole-house or whole-room power line isolation and protection. Benefit# 5: Low Noise: Torus products utilize Plitron ‘LONO’ (Low Noise) transformer design technology that eliminates audible noise in the power transformer regardless of line conditions, DC offset and over-voltage. Torus products perform at the NC10 level measured on the standard NC (Noise Criteria) – which makes them suitable for use in very quiet environments such as professional recording and broadcast studios. Benefit # 6: Cleaner Power: Torus products utilize Plitron “NBT” (Narrow Bandwidth Technology) to attenuate differential and common-mode noise without external circuits or components, and starting at a lower corner frequency (2Khz) than other systems. The Torus result is startling – see press and user comments! Benefit # 7: AVR (optional automatic voltage regulation): The new feature is Automatic Voltage Regulator (AVR). The AVR would make sure that the output voltage of the unit stays uniform within an acceptable range when the input voltage is either increased from or dropped below the acceptable range.The purpose is to keep the output voltage uniform when the input voltage varies over a wide range from 130V to 95V for the North American models and 260V to 190V for the International models and to shut the system down if the input voltage goes above 135V or below 90V for North American models and above 270V or below 180 for the International models. James Tanner Bryston
  6. Hi Dave, Try using the Optical input on the BDA-1 and see if that helps. If it does it may be a grounding issue as Optical eliminates any ground loop problems that may be going on. james
  7. Connecting Bryston BDA-1 to MacBook Pro

    Hi Tom, Try it both ways, but yes the upsampling chip in the BDA-1 is as good as they get. james
  8. Connecting Bryston BDA-1 to MacBook Pro

    Hi Tom, I am a little late to the party here but I just noticed your post: "Under Audio Output (lower right hand panel), I have formatted to 2ch-24 bit and 96000 Hz" Try setting the 96000 Hz at 44.1 - leave the 24 bit alone and see what you think. The way you have it now the MAC is upsampling all the input which is 44.1 (itunes) to 96000 using the computers upsampling feature. With the 44.1 setting you can then use the upsample circuit in the BDA-1 by pressing the button on the BDA-1's front panel to do the upsampling and also compare the upsample signal to a non upsampled signal. james
  9. MAC PRO Question

    HI All, James here from Bryston: My Mac Pro - arrived on Friday - Question: When running Mac OS/X, they support 16, 20 and 24 bits per channel at 44.1, 48 and 96 khz (just like all the other macs in the current product lineup). Under Windows Vista (64 bit), running under boot-camp (Apple's multiple boot utility), It also supports 16 and 24 bit/channel at 192 khz. Am I doing something wrong? Why wouldn't OS/X support the 192/24 sample rate, as the underlying hardware on the Mac Pro does seem to support it or am I mistaken? james
  10. Please help me with Bryston DAC solutions!

    Hi There, The B100 DAC is an option. Some distributors buy the DAC included but there is the option available. The DAC in the B100 is an earlier version of the Crystal DAC in the BDA-1. The DAC in the B100 SST can only accept 4 inputs - 2 optical and 2-SPDIF whereas the External BDA-1 DAC can have up to 8 inputs and a large variety of different sources(AESEUB, USB, SPDIF, BNC, Optical). The DAC in the B100 upsamples to 96/24 whereas the BDA-1 has the option of upsampling but can also accept native digital bitstreams up to 192/24. Hope this helps. james
  11. Article: Bryston BDA-1 DAC Review

    Hi Lee <br /> <br /> I guess it comes down to opinion. There are plenty of people out there who have the DAC (over 100 units already) and are very pleased with its performance and would disagree with you.<br /> <br /> I really do not want to get into a debate about who's correct. A discussion like this goes nowhere. You have your opinion others have theirs.<br /> <br /> james<br /> Bryston
  12. Article: Bryston BDA-1 DAC Review

    Hi Chris,<br /> <br /> One of the issues I find interesting from a manufacturers point of view is the widely variable subjective observations that are part of this hobby.<br /> <br /> You ship the product into the world and sometimes get completely opposite subjective points of view on the very same product.<br /> <br /> I say TOMATO you say TOMATOE!<br />
  13. Hi Chris,<br /> <br /> Thank you for you time and efforts on reviewing our Bryston BDA-1 DAC - much appreciated.<br /> <br /> One point I would like to make clear is the credit for the description on what Jitter is goes to Steve Nugent of Empirical Audio.<br /> <br /> james<br />