Get rid of the Classe' and find a suitable preamp or preamp / processor. It is my experience that most Pre / Pro's suck the life out of music. Whatever you choose to go with, make sure that you run the preamp to power amp in balanced mode. When doing this, make sure that the pin-out of the preamp or preamp - processor uses the same pin configuration as Sunfire's use a sligthly different wiring arrangement. The system would still work if the pin-outs weren't the same, but the sound wouldn't be anywhere near as good. In fact, you might want to check to make sure that this isn't what you're already dealing with now before spending any more money. Replace the stock power cord on the Sunfire amp with something more suitable and for speaker cabling, use Goertz MI-2 Veracity. Been there, done that and on more than one Sunfire based multi-channel system. Sean
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