BDP-2 Digital Player

skidaner · « **Reply #1240 on:** 10 Nov 2015, 01:31 am »

Hi Soliver,

I don't think the new iAd board was made to improve the SQ of the USB?

I also have a nice AES cable that I want to use.

Which Shunyata USB cable are you using?

Hopefully, Bryston can fix this problem.

Thank you for sharing.

James Tanner · « **Reply #1241 on:** 15 Nov 2015, 02:00 pm »

Hi Folks,

COMING SOON:

Have a detailed review coming on the Bryston BDP-2 Digital Player from Absolute Sound Magazine comparing the Juli@ audio card with the Bryston BIAD (Bryston Integrated Audio Device) in the January 2016 issue.

James

MoPac · « **Reply #1242 on:** 19 Nov 2015, 01:24 am »

Chris:
I am looking at DSD DACs to replace my PCM DAC. One of the candidates takes Native DSD only.

What would it take to program the BDP to either send DOP or Native DSD? Does this involve Sony in some way?

Thanks, Rich

unincognito · « **Reply #1243 on:** 20 Nov 2015, 03:37 am »

The BDP firmware Manic Moose supports DoP

http://bryston.com/PDF/Manuals/BDP-2_MM_Manual.pdf

page 15

MoPac · « **Reply #1244 on:** 20 Nov 2015, 09:46 pm »

Chris:
Do you mean to say there is no distinction between Native DSD and DOP?

Thanks, Rich

R. Daneel · « **Reply #1245 on:** 21 Nov 2015, 11:54 am »

Quote from: MoPac on 20 Nov 2015, 09:46 pm

Chris:
Do you mean to say there is no distinction between Native DSD and DOP?

Thanks, Rich

Of course there isn't. DoP was developed by digital specialist from dCS out of Scotland. DoP protocol is a matter of data "presenting" to the DAC, nothing else. It is much like data prefix flagging which instructs the DAC to process the data as DSD even if it is packed as PCM. The data itself is identical to DSD in it's stored (native) form.

James Tanner · « **Reply #1246 on:** 21 Nov 2015, 01:32 pm »

Hi Folks,

Yes there are some who feel that DSD 'Native' is really not necessary given that DSD 'DOP' is doable by most DSD capable DACs.

james

MoPac · « **Reply #1247 on:** 22 Nov 2015, 02:49 am »

R. Daneel
The guys from Hegel gave me the impression, via eMail, DOP would not work with their DACs. Also a quote from a Computer Audiophile review. "Readers Should note DSD playback is Native DSD only, not DOP." Maybe they got it wrong, but it sounds to me like Native DSD and DOP are two different animals.

Rich

unincognito · « **Reply #1248 on:** 22 Nov 2015, 04:28 am »

As long as the dac treats them the same I would say there would be no difference. DoP as mentioned previously is DSD just transported differently. Ultimately it's the same data that is being decoded. If your looking at a dac that is native DSD only, I wouldn't recommend using it with the BDP. We have no time line on when we will support native DSD (we do support DoP currently). The other issue with native DSD support are the varied formats that need to be supported. When we do implement native DSD, it doesn't necessarily mean your dac will be compatible with native DSD that our player outputs.

James Tanner · « **Reply #1249 on:** 22 Nov 2015, 08:25 pm »

Hi James,

My report on the recent IAD upgrade for one of my BDP-2s. The report was posted online on the Polk Audio forum near the end of this thread:

http://forum.polkaudio.com/discussion/166413/bryston-bdp-2-digital-player-review#latest

Ray Smith

Grit · « **Reply #1250 on:** 23 Nov 2015, 04:38 am »

Quote from: unincognito on 22 Nov 2015, 04:28 am

As long as the dac treats them the same I would say there would be no difference. DoP as mentioned previously is DSD just transported differently. Ultimately it's the same data that is being decoded. If your looking at a dac that is native DSD only, I wouldn't recommend using it with the BDP. We have no time line on when we will support native DSD (we do support DoP currently). The other issue with native DSD support are the varied formats that need to be supported. When we do implement native DSD, it doesn't necessarily mean your dac will be compatible with native DSD that our player outputs.

DSD seems like a giant pain in the butt.

Servingthemusic.com · « **Reply #1251 on:** 23 Nov 2015, 05:04 am »

Quote from: Grit on 23 Nov 2015, 04:38 am

DSD seems like a giant pain in the butt.

Honestly, not really. I stream up to 256 DSD via ethernet to the BDP-2. Output via USB to iFI Micro iDSD DAC.

Just ordred a BDA-3.

James Tanner · « **Reply #1252 on:** 23 Nov 2015, 09:13 am »

Quote from: Grit on 23 Nov 2015, 04:38 am

DSD seems like a giant pain in the butt.

Hi Grit

It does get a little complicated because of all the different versions of DSD and I think a lot of people do not realize what version of DSD they are actually listening too. The BDA3 though has 2 different circuit paths so it detects what type of digital signal is present and decodes it appropriately either PCM or DSD and will indicate on the front panel which specific sample rate and version it is dealing with.

james

Here is something I wrote a while ago which may help.

Hi folks

I have been asked a number of times by our customers our position on DSD so please find below our thoughts. DSD currently is available in a number of variations. Assuming you want to produce a product that can grow with time and market forces both hardware and software should to be considered.

DOP 64, 128, 256, 512 (last 2 are theoretical at this point) and DSD Native are the current options. Currently DSD is possible relatively easily with current software and hardware utilizing DOP 64 on current DAC’s and to some degree DOP 128

For example:
DOP-64 requires 176.4 capable DAC’s
DOP-128 requires 352.8 capable DAC’s
DSD Native 64 x 44.1 (standard 2.8224 MHz) (which is equivalent to 16 BIT 176.4 PCM) DAC’s.

Currently the majority of DSD capable products today are using DOP-64 architecture and some DOP-128 and DSD Native. There are also some manufacturers that have proprietary hardware and software which are capable of DOP-64, DOP-128 and Native DSD but proprietary software is not compatible with USB 2 drivers etc.

The other issue we are investigating has to do with the sample rate converters in DAC’s. In order to activate DSD the sample rate converter on the DAC inut stage would have to be a custom piece because current sample rate converters are not equipped to handle DSD to the best of our knowledge?

So that means in a standard PCM converter like our BDA-2 you would have to bypass the sample rate converter which may cause more jitter because our current sample converters reduce jitter on the input. So in Bryston’s case we definitely want the sample rate converter in the circuit for 44.1 to 192 PCM signals. Also some DAC’s we have looked at that are DSD capable convert all the incoming sample rates (44,48,88,96,176,192Hz) to a very high single sample rate ‘Asynchronously’ whereas our preference with our DAC’s is to maintain the ‘Native’ incoming sample rate throughout the conversion process with all PCM signals. If we do up-sample we do it in a synchronous manner so (44.1 becomes 176.4 and 48 becomes 192) not asynchronous.

So before Bryston goes down the DSD road I want to make sure we are providing our customers with the full story and allowing for possible advancements in both hardware and software development as much as possible. Also please offer any info or input if you feel we are mistaken or misinformed.

Note- DOP – Stands for DSD over PCM

James Tanner

Grit · « **Reply #1253 on:** 24 Nov 2015, 11:23 pm »

Thanks for the info James. Your customer service is just outstanding!

BrystonFan · « **Reply #1254 on:** 26 Nov 2015, 04:55 am »

How does one set the AES input on the SP3 in order to use the BDP2?
I don't see it as a selectable digital input to identify it to a source
Appreciate any assistance.

BSMSPEMBA · « **Reply #1255 on:** 26 Nov 2015, 05:14 am »

Quote from: BrystonFan on 26 Nov 2015, 04:55 am

How does one set the AES input on the SP3 in order to use the BDP2?
I don't see it as a selectable digital input to identify it to a source
Appreciate any assistance.

Select Bal-1 or Bal-2, depending on which input the BDP is connected. Next, press the Digital button. That should do it.

BrystonFan · « **Reply #1256 on:** 26 Nov 2015, 01:28 pm »

So did I, but I see the BDP2 playing, but no volume out of SP3. the display says AES1 Digital NO. I'm thinking it may be a bad AES/EBU cable (but it can't be-it's a Bryston).
I even tried changing inputs to AES2 - silence.

James Tanner · « **Reply #1257 on:** 26 Nov 2015, 01:59 pm »

Quote from: BrystonFan on 26 Nov 2015, 01:28 pm

So did I, but I see the BDP2 playing, but no volume out of SP3. the display says AES1 Digital NO. I'm thinking it may be a bad AES/EBU cable (but it can't be-it's a Bryston).
I even tried changing inputs to AES2 - silence.

Sounds strange - email Mike - mpickett@bryston.com

james

BSMSPEMBA · « **Reply #1258 on:** 26 Nov 2015, 04:08 pm »

Quote from: BrystonFan on 26 Nov 2015, 01:28 pm

So did I, but I see the BDP2 playing, but no volume out of SP3. the display says AES1 Digital NO. I'm thinking it may be a bad AES/EBU cable (but it can't be-it's a Bryston).
I even tried changing inputs to AES2 - silence.

Just to see if there is an issue with the BDP, I suggest connecting it to the SP3 via USB. Try playing an MP3 or 44/16 to see if that works. If it does, then at least you know it can play something.

BrystonFan · « **Reply #1259 on:** 26 Nov 2015, 11:17 pm »

Mike to the rescue!

Thanks again to the excellent after sales service Bryston provides.