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New headphone amplifier from Bryston - Page 94

post #1396 of 1428
Quote:
Originally Posted by Widell View Post
 

Please anybody,

 

BHA-1 compared with the HDVA 600?


Seeing that the HDVA 600 from what I understand is basically the HDVA 800 without the DAC I'm sure they're very similar, so you may have more info searching for the BHA-1 and the HDVA 800.

 

http://hifilounge.tumblr.com/post/48205921616/at-long-last-the-sennheiser-hdvd-800-is-now-with-us

"Compared to the Bryston BHA-1/BDA-1 with the HD 800’s, well they do things very differently, the Bryston rig hasn’t got the out and out resolution, detail and separation but offers a fuller more analogue, organic and I guess natural presentation, that if I’m honest I could probably listen to for longer periods without fatigue. To be fair, my BHA-1 has had a lot of use and I’m really hoping that when the HDVD 800 has got similar hours on it that it will fill out a little and the higher frequencies will smooth out a little, hopefully without affecting the detail..............."

post #1397 of 1428

Thx guys

post #1398 of 1428

Does BHA-1 use negative/global feedback in its circuit?

post #1399 of 1428
http://bryston.com/pages/warranty.html

Is there 5 or 20 years of warranty for the BHA-1 ?
post #1400 of 1428
Quote:
Originally Posted by Synthax View Post

Does BHA-1 use negative/global feedback in its circuit?

Yes.

Only audiophiles think negative global feedback is a bad thing!
post #1401 of 1428
Quote:
Originally Posted by Hubert481 View Post

http://bryston.com/pages/warranty.html

Is there 5 or 20 years of warranty for the BHA-1 ?

Twenty year warranty.
The headphone amplifier is not a digital product.
post #1402 of 1428
Thx :-)
post #1403 of 1428

Probably you are right, but I'd like to hear different approaches of producers. I have fun with that, and I do not proclaim that feedback is back. 

post #1404 of 1428
James, Mike from Bryston please answer one question:
Why did you design the BHA1 not fully balanced? I have a balanced input with V800 DAC but from my understanding every input of the BHA1 is converted to Single Ended. So a balanced input has no benefit. Make this sense? Thanks
post #1405 of 1428
Quote:
Originally Posted by Trance_Gott View Post

James, Mike from Bryston please answer one question:
Why did you design the BHA1 not fully balanced? I have a balanced input with V800 DAC but from my understanding every input of the BHA1 is converted to Single Ended. So a balanced input has no benefit. Make this sense? Thanks


?

http://bryston.com/PDF/Manuals/300028%5BBHA1%5D.pdf  Page 10


Edited by Rob80b - 2/20/14 at 1:35pm
post #1406 of 1428
Quote:
Originally Posted by Trance_Gott View Post

James, Mike from Bryston please answer one question:
Why did you design the BHA1 not fully balanced? I have a balanced input with V800 DAC but from my understanding every input of the BHA1 is converted to Single Ended. So a balanced input has no benefit. Make this sense? Thanks

I know I'm not James, but the balanced input stage rejects Common Mode noise.
That's what it is supposed to do.
That is the purpose of running balanced transmission lines from your source to your amplifier.
So Common Mode noise is rejected before it is amplified.
Then the output stage converts the signal back into balanced via two bridged amplifiers.

I don't see any technical advantage to running "fully balanced".
post #1407 of 1428
Quote:
Originally Posted by Chris J View Post


I know I'm not James, but the balanced input stage rejects Common Mode noise.
That's what it is supposed to do.
 

I'm not James either but also from far as I can tell the amp has discrete +, - , and ground from input to output.

post #1408 of 1428
Quote:
Originally Posted by Rob80b View Post

I'm not James either but also from far as I can tell the amp has discrete +, - , and ground from input to output.

It strikes as odd that an amplifier that accepts Single Ended and Balanced inputs, can drive either Single Ended or Balanced headphones, and has a differential (balanced) input stage to reject common mode noise from balanced transmission lines is perceived as flawed?
Wah?
Edited by Chris J - 2/20/14 at 3:51pm
post #1409 of 1428
Quote:
Originally Posted by Chris J View Post


It strikes as odd that an amplifier that accepts Single Ended and Balanced inputs, can drive either Single Ended or Balanced headphones, and has a differential (balanced) input stage to reject common mode noise from balanced transmission lines is perceived as flawed?
Wah?


This might be the most outstanding feature of the amp--

 

Different strokes I guess...

post #1410 of 1428

I would like an official answer from James and Mike. I think converting from Balanced to Single Ended is not a good idea.


Edited by Trance_Gott - 2/20/14 at 11:18pm
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