I don't like Pass preamps. They have a lifeless sound to them. I haven't heard some of their newer preamps, so I don't know about those models. Also, I had both amps that you have, only I had the 0 monos, not the stereo. But they sound very close. I had an X series preamp and kept it only for a few months. BAT's preamps are much more modern sounding and will work well with a wide variety of equipment.
