FINALLY got my Channel Islands VPC-1 passive preamp and hooked it up yesterday . . . . BIG difference in the sound. The little bit of harshness that I was hearing in the midrange is gone now -- female vocals sound fuller, and everything is "richer" sounding. Plus, there is a LOT more low level detail now -- audience noises are much more noticeable in Eva Cassidy's "Live at Blues Alley," and echoes and treble decays are more noticeable and natural.
I guess what everyone says about the Lexicon DC-1 not being great for 2-channel is dead on the money . . . .
I don't know what preamp you're using, but if it's a HT type of thing, you might want to give the VPC-1 a try. It's only $220 new, and it will let you hear exactly what's coming out of your source, without any added coloration or sonic disturbance from an active preamp.
It's easy to rig into a HT setup, too, as long as you only want to have one analog source. The VPC-1 has two inputs, so you just run your CD/DVD analog outs into one input, and then the main L/R outs from your HT processor into the other. For HT listening, just switch to the HT outs input and turn the preamp volume all the way up -- then it's sonically not even in the circuit, basically, and there's no need to level match.
Pat