Anyone using one of the above mentioned Mcintosh preamps? I have a Mc225, an Mr-71 and would like to complete the lineup. Currently I use a David Berning TF-10 and the synergy is superb with the amp. Can anyone give me some feedback on what they like about the vintage Mc pre's? Most likely I wont be able to afford the C22 though. my setup is: Berning TF-10 preamp, Mc225 amp, MR71 tuner, JBL L-96, EV12trxb and EV15TRX speakers, plus tape sources, TT, and McIntosh MCD7009 CDP.