While I'm not disappointed in my decision to get an SC20h, I am disappointed in the amp. If I upset the fans so be it. The loop volume drop is drastic to me and darkens the amp. Could this one be a "dud?" It had no balls or punch even with a pre and power tube swap. Bass had to be 2o'clock or higher. Played through Marshall V30 Jubilee 4x12 and Mesa verrtical 2x12 v30s. Duncan Distortion in a Jackson KV2T. My first 2555x was DEFINITELY a dud and returned. This SC20h is not how I remember the one I played at a GC through the matching 1x12. I need a Marshall to sit between a 2555x and and a Mesa Mark IVa.