About a year ago I dipped my toe into the McIntosh pool with a used C220 preamp. This replaced a C-J PV10 preamp that I liked a lot, but lacked some of the control flexibility (especially the range of the balance control) to work in my rig. I could not be happier with the C220, or with the service from Audio Classics where I bought it. A tube upgrade has really made this preamp sing, as well as made it very quiet. It is super reliable, and functions without a glitch. I lucked out on system synergy with my Odyssey Stratos amp and Ohm Walsh 2000 speakers. The only preamp I would consider moving to now would be the C2300, which has even more flexibility. I know Sam Tellig gave the C220 a lukewarm review, but in my system, my room and with my music, even mediocre-sounding LPs and CDs sound absolutely wonderful, with better sounding source material (especially SACDs) sounding sublime. You know you're getting there when you sit listening with that you-know-what eating grin on your face, like I often do. I know many consider Mc gear expensive audio jewelry, but, all things considered, I think Mc gear is a fair value at retail, and a killer value when buying mint or near-mint used.