Sounds to me like a serious lack of power delivery/noise control measures issue. Get a Porter Port cryo'ed outlet, clean the wire leads in the wall w/ Brasso and watch what will happen to bass strength and extension. This is just the beggining...
Ic for bass problems
I'm currenty using the following gear: Meridian 507 cdp, Plinius 8150 integrated, SF EA1 speakers, Straightwire virtuoso speaker cables, Onix Maestro ic. My problem is uneasy, muddy, bloated, low mid and bass. I did try for a very short time Kimber pbj ic, and it did rectify some of the problem, but gave peculiar unreal bass. I'm considering Red Dawn ic. Will it help?
Roy.
Roy.