Bass leaves after amp warms up?


I don't understand-after my Musical Fidelity M6i amp warms up for about an hour I notice the deep bass & kick drum aren't the same.
They sound less musical with loss of weight/depth.The notes are there but the moving of air have left.Sound is has much less impact and boreing.
I had the same problem with Bryston amp so there is no defect with amps nor with the rest of my equipment/
PSB Synchrony one speakers,AQ cables,Bryston CD Player.
My question has anyone heard similar & is there a plausable reason?
fishing716

Showing 2 responses by b_limo

Fishing, is it related to the time of day? Early mornings and late nights it sounds good? Middle of the day, it sounds bad? I've noticed my system sounds better late at night, around 9pm and later.

Also, are you able to demo another amp from a local hifi shop?

If none of that works, maybe you should sell me the psb's at a highly discounted rate, since they're obviously defective ;-)
Dang, poor guy. I can't believe this thread went eight pages. I would have thought it was a joke if he hadn't tried so many fixes.

I hope you get it figured out Fisher.