Bryston amp, pop sound at power down.

bslon: I think my sound could be also described somewhere between a thud and pop. Interesting you had it on the older version as well. I'd be curious if anyone else who has the 4BSST2 has the issue. 

I will send an email to James tanner if I can locate the address on their website.

Thanks

I have 3 Bryston 7B ST's and all three give off a pop/crackle at power down, whether turned off at the pushbutton or due to loss of AC feed.  Since it is the same for all three, I guess it is normal.

While a bit disturbing, the sounds are not loud enough to endanger my speakers, and they no longer bother me as I am used to them.

I leave these amps on all the time, and so I hear the noises very rarely.

I own the 4BCubed for many years with Vandersteen Treo and Vandy Subs and it happens every time I power off.  My amp is on all the time unless I'm out of town for a week or more. My speakers sound great so I don't know of any damage that's caused by the pop that we both hear.

I had a Bryston pre and monos.  Exact same issue.  Even if I hit mute!  In the end it was the reason I sold them. Bryston was zero help.

Ok, so sounds like what I'm hearing is perfectly normal, which is what a technician at Bryston told me.  I will stop fretting!

Thank you all for your responses