BDA-1 -- News?

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ian.ameline

BDA-1 -- News?
« on: 7 Jun 2008, 05:15 pm »
Hi James,

What's the current news on the BDA-1? Can you post some pics of the production units yet? (I'm particularly intersted to se one of the insides :-)

Thanks.

James Tanner

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Re: BDA-1 -- News?
« Reply #1 on: 7 Jun 2008, 07:32 pm »
Hi James,

What's the current news on the BDA-1? Can you post some pics of the production units yet? (I'm particularly intersted to se one of the insides :-)

Thanks.

Hi Ian,

I have one at home this weeked which is the final production version.  We will be sending a unit in next week for photos for the literature so I should have some inside shots at that point. Is there something you wanted to know specifically regarding the inside layout?

We started (finally) building units last week but the first 2 production runs are presold. The specs so far look OUTSTANDING.

SECIFICATIONS:
•   Frequency Response - 20 Hz - 20 KHz -.1dB
•   Signal to Noise – 140 dB Unweighted
•   THD Plus Noise - .004%
•   IMD - TBA   
•   Jitter is - Negligible (below the residual of the Audio precision AP2700 test gear)
•   Output Level - 2.3V Unbalanced - 4.6V Balanced
•   Shipping Weight - 18 Lbs / 8.2 Kg
•   Dimensions - 17 or 19 w / 11.25 d / 1.75 h inches
•   43.2 or 48.3 w / 28.6 d / 4.4 h cm

I have the preliminary lit for anyone who wants more detail on the DBA-1(it is a 1 meg file)---email me.


james

jethro

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Re: BDA-1 -- News?
« Reply #2 on: 7 Jun 2008, 08:27 pm »
Hi James:

The BDA-1's Frequency Response is spec'd at 20Hz - 20 Khz @-.1dB.
I've always wondered when selecting speakers for 2-channel audio, which are being fed by a DAC,
how low do you need to go with your speakers ?

Is there a limit to the lower frequency output based on the incoming digital signal or does it theoretically (excluding hardware limits) go to
just above 0 ?

Do you have a lower frequency spec @ -3dB for the BDA-1 ?

Thanks, Steve

James Tanner

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Re: BDA-1 -- News?
« Reply #3 on: 7 Jun 2008, 09:12 pm »
Hi James:

The BDA-1's Frequency Response is spec'd at 20Hz - 20 Khz @-.1dB.
I've always wondered when selecting speakers for 2-channel audio, which are being fed by a DAC,
how low do you need to go with your speakers ?

Is there a limit to the lower frequency output based on the incoming digital signal or does it theoretically (excluding hardware limits) go to
just above 0 ?

Do you have a lower frequency spec @ -3dB for the BDA-1 ?

Thanks, Steve

Hi Steve,

Yes the 20Hz-20KHz is just an industry reference point. The Bryston amps for instance have a bandwidth of .5Hz to over 130KHz.

We just did the production version of the BDA-1 measurements on Friday so I will ask the technical guys and get an answer for you on the DAC's low frequency cutoff point.

james

ian.ameline

Re: BDA-1 -- News?
« Reply #4 on: 8 Jun 2008, 02:07 am »
Hi James,

As far as internal shots go -- well, they're nerd porn :-) And I just want to lust over what I will be getting later this year.


vegasdave

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Re: BDA-1 -- News?
« Reply #5 on: 9 Jun 2008, 04:19 am »
Hi James,

What's the current news on the BDA-1? Can you post some pics of the production units yet? (I'm particularly intersted to se one of the insides :-)

Thanks.

Hi Ian,

I have one at home this weeked which is the final production version.  We will be sending a unit in next week for photos for the literature so I should have some inside shots at that point. Is there something you wanted to know specifically regarding the inside layout?

We started (finally) building units last week but the first 2 production runs are presold. The specs so far look OUTSTANDING.

SECIFICATIONS:
•   Frequency Response - 20 Hz - 20 KHz -.1dB
•   Signal to Noise – 140 dB Unweighted
•   THD Plus Noise - .004%
•   IMD - TBA   
•   Jitter is - Negligible (below the residual of the Audio precision AP2700 test gear)
•   Output Level - 2.3V Unbalanced - 4.6V Balanced
•   Shipping Weight - 18 Lbs / 8.2 Kg
•   Dimensions - 17 or 19 w / 11.25 d / 1.75 h inches
•   43.2 or 48.3 w / 28.6 d / 4.4 h cm

I have the preliminary lit for anyone who wants more detail on the DBA-1(it is a 1 meg file)---email me.


james

Yes, those specs are impressive. How do you do it? lol.

James Tanner

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Re: BDA-1 -- News?
« Reply #6 on: 14 Jun 2008, 12:13 am »
I have the preliminary owners manual for the BDA-1 - email me and I will send it--- it is 1.5Mg

james

pardales

Re: BDA-1 -- News?
« Reply #7 on: 14 Jun 2008, 12:22 am »
USB input?

James Tanner

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Re: BDA-1 -- News?
« Reply #8 on: 14 Jun 2008, 12:32 am »

mcullinan

Re: BDA-1 -- News?
« Reply #9 on: 18 Jun 2008, 01:24 pm »
Anyone receive their BDA yet? Comments on sound, build and such?
Anticipa ay tion!  :green:
Mike

James Tanner

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Re: BDA-1 -- News?
« Reply #10 on: 18 Jun 2008, 03:31 pm »
Anyone receive their BDA yet? Comments on sound, build and such?
Anticipa ay tion!  :green:
Mike

They are not leaving the factory till next week.

james

mcullinan

Re: BDA-1 -- News?
« Reply #11 on: 18 Jun 2008, 03:52 pm »
Thanks!James!!!!
Mike
 :D

You ARE THE MAN!
Look Im a web designer! YEah!!!

john1970

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Re: BDA-1 -- News?
« Reply #12 on: 22 Jun 2008, 01:32 am »
James,

I'll also be interested in seeing some pictures of the BDA-1.  Although I'm in no rush to get one I am considering a purchase in the fall to compliment my 4B SST and BP25 setup. 

Cheers,

John

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Re: BDA-1 -- News?
« Reply #13 on: 23 Jun 2008, 11:05 am »
Hi All,

Still have not released the BDA-1 yet - waiting for 'CSA Electrical Approvals' --- what can I say -it's a government agency.

james

James Tanner

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Re: BDA-1 -- News?
« Reply #14 on: 23 Jun 2008, 06:20 pm »
Hi All,
 
I was speaking with one of our dealers in Vancouver the other day as he has a number of the new Bryston BDA-1 External DAC's on order.
 
I was commenting that the External DAC originally was designed to provide an outboard DAC for a dedicated Bryston CD Drive later this year. The dealer commented that he felt the new Bryston DAC given its quality and multiple input capability had many more uses beyond the traditional CD Drive application.
 
So here are his thoughts on some of the other uses for the Bryston BDA-1 External DAC.
 
james



MEMO - Bryston Dealer Feedback
SUBJECT – New Bryston BDA-1 External DAC

June 2008

Hi James:
 
As per our discussion of applications for the new Bryston’s 8 input External DAC, there are plenty of uses that go well beyond using it with a traditional CD transport (although that’s an obvious use, of course). Several come to mind in my own system.
 
1) Terrific performance improvement for the newest music server systems like the Sonos. Sonos players have both optical and coax digital outputs on each zone player and the system is capable of streaming WAV CD quality files from music stored on your computer (as well as the usual internet streaming MP3’s from Napster, etc. Even those files improve greatly through a good DAC.

2) As a USB DAC straight from the computer if you don’t use a server system

3) Wadia has just released an iPod dock that allows access to the iPod’s digital output and bypasses its DAC section and analogue output to allow connection to a much superior external DAC. As many audiophiles (like me) keep their iPods loaded with CD quality WAV files or lossless compression, the resulting quality is capable of CD quality with no source hardware other than an iPod as the server.

4) While not yet available in Canada, the Music Giants website sells non DRM music downloads of much higher than CD quality in Hi Res formats which can only played via a computer as the resolution is much higher than CD is capable of. The USB DAC capabilities of the Bryston make it easily the highest possible quality solution for playback of these files when they begin to be available in Canada.

5) I read an article the other day that said that downloaded music will outsell CD by 2010. Clearly there is much room for future digital downloads to far exceed the performance of current CD and they will be playing through the crappy DA converters found in most computers. Ugh! DACS are ready for a comeback, big time in my opinion.
 

Lee Fitzgerald
Commercial Electronics.
Vancouver BC




DMF

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Re: BDA-1 -- News?
« Reply #15 on: 23 Jun 2008, 07:47 pm »
"A dedicated Bryston CD Drive". Oh man, just when I thought I had my mind made up to get the BCD-1  :duh:

You guys are on a roll aren't you?  :thumb:


edmiston

Re: BDA-1 -- News?
« Reply #16 on: 23 Jun 2008, 08:27 pm »
Hi James,

I know it is too late for the current release, but......you  know there are a lot of us who no longer use analogue inputs.  If the BDA-1 had a passive analogue volume control - voila! digital preamp.

Mark

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Re: BDA-1 -- News?
« Reply #17 on: 23 Jun 2008, 10:54 pm »
Hi James,

I know it is too late for the current release, but......you  know there are a lot of us who no longer use analogue inputs.  If the BDA-1 had a passive analogue volume control - voila! digital preamp.

Mark

Hi Mark,

We can offer a volume control with a software change in the BDA-1 but our concerns are the loss of resolution as the level is reduced. We are going to do some tests to see at what level it is audible.

james

James Tanner

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Re: BDA-1 -- News?
« Reply #18 on: 23 Jun 2008, 10:56 pm »
Hi All,

I now have real pictures of the BDA-1 Front and Back - no inside shots yet - maybe tomorrow.
Email me if you want me to send pics.

james

KeithA

Re: BDA-1 -- News?
« Reply #19 on: 24 Jun 2008, 02:00 am »