Hi Guys, recently I have an Accuphase P-350 Power Amp and yesterday I tried it with a Marantz 7t SS preamp and it sounded very nice with a pair of Ar-3a at 210 per-channel, but since I have 3 tubes system running at home I prefer the tube sound much better. This is my question about a tube preamp, right now I'm interested in a McIntosh C-20 but I think is going to go too high for my budget, meanwhile my friend is offering a Conrad Johnson PV-12 for a nice price but I don't know jack about this type of pre-amps. How does it sound? It doesn't have the bass and treble controls that I'm familiar with. How this affects the sound? So I'm undecided as to what to do. Your help is greatly appreciated. Thanks