Haven´t been around here for ages I guess... Well, I just did a comparison with some nice preamps on high guitars and even bass. The preamps used were API 3124+, Vintech X73i, Universal Audio 6176 and TL Audio EQ 2. A single SM57 on a MESA 4x12", no EQ. I think I may have forgotten to turn off the phase flip on the Vintech...but that way you know exactly where the cut is. I was quite surprised how it all turned out...especially on bass guitar. Enjoy!