I am running a Mac 402 Amp, a Mac 2300 Preamp, using the MC tube Phono stage in the Mac with my Shelter 501 II. I have about 75 hours break in time so far. My Shelter still sounds tiny and the base isn't coming on like I hoped. I previously had a Denon DL160 that to me sounded a lot more natural. I still have hopes of it getting better since it was reviewed so well.
