Thanks unsound, reading about not just the output V ->input V principle, but also reading up on the relationship between dBu and voltage (a link in the thread) seems so fundamental, it's odd how little the subject is brought up on the mainstream consumer level. Thanks for pushing me to learn more here, I'm looking forward to playing around with this.
Tomthiel, great suggestion on the Benchmark! I appreciate the purity of the B, but the HGC I think fits my needs a little more right now. Regardless, they all seem to have great reviews, lots of functionality, and no frills. Still reading up on it (ironically, output voltage is the one spec that I don't see listed!), but it's at the #1 spot right now for me.