Can I get some tube edjumacation from you guys? I bought a Soundstage Vacuum 2 preamp from our very own Gator3000, which arrived yesterday. I hooked it up this evening to my LSi15's, Adcom GFA 545 II, and cheapo Denon CD player. The mids and highs are very clear and crisp but there is almost no bass. Previously I was using my old Denon AVR 1801 as a pre and I had it flat, so it's not like I'm used to having the bass cranked up. I've never owned any tube gear before and am totally ignorant. This pre came with JAN 6922 x 2 Philips NOS/NIB (6/86). My Adcom is being used by both the Denon (for movies, TV, phono) and the Soundstage (obviously not simultaneously), so I've got a pair of Y splitters on the inputs for the amp. Is there something I'm missing?