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樓主: clplarry

[CAS] Any DAC with 2 or even 3 USB inputs available

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發表於 2018-6-7 19:38:36 | 顯示全部樓層
clplarry 發表於 2018-6-7 11:14
Thanks for your reply. I have searched over the web that it was sold at US$3495 in Canada approxim ...

For Bryston BDA-3, it is not difficult to find its “Specs” as lots of reviews can be found on Audiophile Forum, HiFi Magazine (Including Taiwan and China)
All reviews are positive as BDA-3 is “Worth For Money” and the sound is quite neutral.
Bryston chose an AKM4490 chip which can support PCM format up to 768 kHz and DSD 256.
Bryston uses 2 of this chip running in monophonic role on the BDA-3 to decode both PCM and DSD digital signals.

You can find the supports (eg: Early Firmware Announcement) and technical information on an audiophile forum called “Audio Circle”. On the “Bryston” Forum, U can find many responses made by Bryston CEO “James”.
Go and take a look if U are still have interest on BDA-3 or BDP-3...
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發表於 2018-6-7 19:45:34 | 顯示全部樓層
clplarry 發表於 2018-6-7 11:14
Thanks for your reply. I have searched over the web that it was sold at US$3495 in Canada approxim ...

The price of the BDA-3 should be no more than $27,000 in Hong Kong.
For Bryston, normally speaking the “PLC” of its product should be about 4-5 years.

PS: PLC stands for Product Life Cycle
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發表於 2018-6-7 19:50:00 | 顯示全部樓層
clplarry 發表於 2018-6-7 11:14
Thanks for your reply. I have searched over the web that it was sold at US$3495 in Canada approxim ...


Bryston BDA-3 Inside Layout

Bryston BDA-3 Inside Layout


Here U are...
Hope it helps...
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 樓主| 發表於 2018-6-7 20:01:51 | 顯示全部樓層
DaDaDa 發表於 2018-6-7 19:50
Here U are...
Hope it helps...

Thank you very much for your detailed information.
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發表於 2018-6-7 21:07:03 | 顯示全部樓層
clplarry 發表於 2018-6-7 17:20
The one you recommended is a tube analogue output designed. Any more in all solid state design wit ...

其他冇留意
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 樓主| 發表於 2018-6-8 09:11:21 | 顯示全部樓層
本帖最後由 clplarry 於 2018-6-8 10:21 編輯
DaDaDa 發表於 2018-6-7 19:38
For Bryston BDA-3, it is not difficult to find its “Specs” as lots of reviews can be found on Au ...


Hi Brother DaDaDa, it is very strange that the Bryston BDA-3 DAC could only handle all PCM and DSD files with the USB inputs only. Other inputs as S/pdif, AES/EU, I2S (HDMI), BNC and Toslinks could only handle PCM without DOP function for DSD processing. According to James Tanner's illustration from Bryston, this design is because reducing of jitter on playing music. But it's rather inconvenient to have no DSD operation on all inputs except the USB only. I am not sure whether this restriction applies only on the earlier version launched in 2015. Could your BDA-3 handle both PCM and DSD music files on all inputs?  
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發表於 2018-6-8 12:18:32 | 顯示全部樓層
clplarry 發表於 2018-6-8 09:11
Hi Brother DaDaDa, it is very strange that the Bryston BDA-3 DAC could only handle all PCM and DSD ...


DoP through S/PDIF & AES/EBU is not a new technology and up to this moment it is still not a necessity for a new coming DAC.
Most engineer concerns when designing a DAC/ SACD Transport is the sound quality, “DoP” does not mean a definitive good sound quality.
The majority of DAC handles PCM only over S/PDIF and AES/EBU inputs, only few can handle DSD.
On the other hand, if U want to have a DAC handles both PCM & DSD over S/PDIF and AES/EBU inputs, remember U probably need to have a Transport which can handle the same job too.
BDA-3 has 4 HDMI inputs support DSD 64 (not I2S), mostly for accepting the DSD64 signal from BD player when playing SACD.

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 樓主| 發表於 2018-6-8 17:56:55 | 顯示全部樓層
DaDaDa 發表於 2018-6-8 12:18
DoP through S/PDIF & AES/EBU is not a new technology and up to this moment it is still not a neces ...

Yes, I got it. And, I think this Bryston BDA-3 is the only design for splitting PCM and DSD operation with PCM on S/PDIF, AES/EBU and Toslink only while the USB has the full ability for both PCM and DSD handling. On the other hand, it is quite enough to have 2 USB inputs for an overall PCM & DSD operational functions for music playing.
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