I would like to add a tube preamp to my system to improve the 2 channel music performance. My current system consists of Vandersteen 2Cs mains, Sherbourn 5/1500A amp, Yamaha RX-V-596 receiver (as a pre-pro), MMF-5 TT, Carver SD/A-360 CDP and a Panny RP-91 (for hi-rez stereo from DVD-As). My goal is to get the Yamaha out of the path when listening to music and to add some warmth to the Vandies, without sacrificing detail. I will need at least 3 and preferably 4 inputs and would like dual outputs. A decent phono stage and/or HT bypass would be nice, but aren't necessary. My budget is about $500 and I have no problem with good quality used gear. I've been looking at some of the preamps on Audiogon and a few that have caught my eye are the Audio Experience Symphonies, several Conrad-Johnson and Anthem models, an Audible Illusion and even an AudioNote M-Zero. Suggestions, comments or alternatives are welcome and encouraged. TIA. FYI, I have also posted this question on AA and AANx. I like to get a broad range of opinions.