Frankycoin, Great system. I am a former owner of a krell showcase. I would strongly suggest looking at an Anthem AVM 20. I had both and the Anthem was superior in every respect. The Anthem avm20 is basically the same unit as the avm30 sonically. I believe the only difference is there are a couple additional inputs on the AVM30. The anthem is also able to be updated every couple months via your computer and a download from anthems website. I think it sounds better than the Showcase and it will also save you some cash for other upgrades. Best of luck.
Most likely, your center channel is wreaking havoc on your sonics and should be mounted on it's own stand and grounded to the floor rather than share the rack with your components.
