In fact, I'm curious as to how you're even amplifying it in such a way that you don't already have another volume control for it.

A volume control is already there (the central is hooked up to a Kenwood pre-amplifier, which is connected to a Behringer Ultra Curve Pro 8024 DSP, which is connected to two Denon POA 4400 pwr amplifiers) - what I wanted is a volume control via the remote control. But, as it looks like, it'll be easier to get a pre-amp w/remote (volume) control than to get it implemented into the central.

Peter