I played at a user conference in Chicago on Saturday night opening for Chris Isaak. I used a Mark IV with two Traditional Recto straight 4x12’s running a KLON Centaur for a slight clean boost in front of the amp. It sounded insane. Here is a shot from the show as well as a shot of my new Mark III Blue Stripe and a newly put together Mark IV rack. I used my Mark IV combo case to house my Mark III. Sitting on top of a Mesa 1x15 w/ EV the low end is frightening.