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Bryston amps experts: Help me...  

post #1 of 10
Thread Starter 
I have a pre-owned 3B THX amp bearing serial number 331646. I would like to know if this is the ST series or the NRB series. How old this unit can be? Bryston website has very few information on this unit.

Thank u.
Peter
post #2 of 10
Send an e-mail to Bryston, and they usually get back within a day or so.

Regards,
post #3 of 10
What is the date code on it ?
I believe NRB ceased production by 1996.
I also think the THX is more or less an ST with a trigger.

Of course, you can always call Bryston at 705.742.5325 and probably get the official answer immediately, perhaps even from James Tanner himself. They are very quick to respond, be it for sales inquiries or tech issues.

- Andy
post #4 of 10
Thread Starter 
Quote:
Originally posted by Andy Lammer
What is the date code on it ?
I believe NRB ceased production by 1996.
I also think the THX is more or less an ST with a trigger.

Of course, you can always call Bryston at 705.742.5325 and probably get the official answer immediately, perhaps even from James Tanner himself. They are very quick to respond, be it for sales inquiries or tech issues.

- Andy
the date code is 402. May I know what is the different between 3B-NRB-THX version and the newest ST version in term of sound and the feature(function)?
post #5 of 10
Thread Starter 
Quote:
Originally posted by Peterhew


the date code is 402. May I know what is the different between 3B-NRB-THX version and the newest ST version in term of sound and the feature(function)?
anyone can help?
post #6 of 10
Have you contacted Bryston with the Serial #?

They will almost certainly be happy to assist you.


Regards,
post #7 of 10
Peterhew,

"May I know what is the different between 3B-NRB-THX version and the newest ST version in term of sound and the feature(function)?"

First of all, like everyone's been asking you to do, call Bryston to figure out which amp you have.

The ST series are a major technical update of the NRB series by Stuart Taylor (hence the ST name). The two major things done are a change of the gain structure of the circuitry, details of which are found in:

http://www.bryston.ca/chrismemo/christopher.html

And changes in the physical layout of the amp internals. Both changes improve sound quality by lowering noise and distortion.

Featurewise, it has the same features are the NRB.

--Andre
post #8 of 10
Thread Starter 
Quote:
Originally posted by AndreYew
Peterhew,

"May I know what is the different between 3B-NRB-THX version and the newest ST version in term of sound and the feature(function)?"

First of all, like everyone's been asking you to do, call Bryston to figure out which amp you have.

The ST series are a major technical update of the NRB series by Stuart Taylor (hence the ST name). The two major things done are a change of the gain structure of the circuitry, details of which are found in:

http://www.bryston.ca/chrismemo/christopher.html

And changes in the physical layout of the amp internals. Both changes improve sound quality by lowering noise and distortion.

Featurewise, it has the same features are the NRB.

--Andre
Thanks for sharing it. I have email bryston and confirmed my 3B is actually NRB -THX version instead of ST version. Sigh...... Looks like ST is a better bet, I miss it. Don't know the sound quality will difference a lot or not..... Anyone compare it before???
post #9 of 10
Peter,

I would suggest discussing this with Bryston. It was my understanding that the NRB amplifers could be upgraded to ST.

Regards,
post #10 of 10
Thread Starter 
Quote:
Originally posted by John Kotches
Peter,

I would suggest discussing this with Bryston. It was my understanding that the NRB amplifers could be upgraded to ST.

Regards,
really??? Thanks for your information :)
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