Help: Classe CAV75 problem?

I have a CA-150 that does that same thing. I had the piece back at the factory right after I bought it and they did nothing to correct that particular problem. I own the Ca-301 too which works fine in shut down. I guess it's something we have to live with if we own this amp. All in all I really like the piece. I too run it bridged for three in my H/T system.

My CA200 doesn't have this problem, FWIW...

I play electric bass guitar and in the world of guitar amps this is not unusual. I own an SWR bass amp, which is one of the best on the market and it makes a very loud thump when turned off. This should in no way damage your speakers. It is a really surprising that Classe let those out the door though. I use Classe 70 amps in my surround system and they make no noise (these are really beautiful sounding amps and a really great used buy). I have also owned a DR15, a Fifteen, and a CA300, all very quiet.

My c-j premiere 11a does the say thing, though it is more of a dull thump. I think this is a not uncommon occurence with various amps regardless of design.