I picked up a Mesa 412 cab $550 off Craigslist for an amp I'm building and happened across a Mark 3c blue stripe $675 while searching. Reverb, EQ arrgh GAS overtook me and I bought it. The power tubes didn't impress me and the preamp tubes were a mix of Mesa and JJ's (which I don't like at all) so I over nighted in all new tubes which arrived today! Winged-C 6L6'S Winged-C EL34's and 5 of my favorite 12AX7's. Tomorrow I'm gonna make some noise!