i'd like to know the maximum input value for Bryston expressed in dBu or volt rms.Just to be sure to se the correct output from my reference dac.
I hope that someone at Bryston technical department can give me a clear answer about that (i've already emailed them but got no answer)
Ok see where you are going.
Haven’t done actual measurements but the input section of the BHA-1 is fairly robust but I’ve found that the amp section can be distorted if pushed too hard.
To explain, I did some tests earlier on when acquiring my BHA-1, I also ran my 2BLP pro amp (which has a headphone out) off the balanced pre outs at the same time.
What I found was that when pushed too hard, way beyond safe listening levels, I was able to hear discernable distortion out of the BHA-1s headphone outputs but the same volume level and higher off the 2BLP was fine.
So I’d be safe in saying that the BHA-1 should be fine in handling what ever you throw at it, +18dBu (6.15 volt rms) to +26dBu (23.7 volt rms), any distortion which might then incur from the amp section would be at a volume level way too high for any safe listening and the death of the headphones
But again, if the input level is too high, I’d actually would prefer around 4dB, one would be extremely restricted to the amount of open gain on the volume control.
You may want to call Mike Pickett, usually much better than email and who’s a very friendly and knowledgeable person at Bryston 1-800-632-8217.