Hi, I'm new here! I've been a part of other guitar forums for a while, but as I'm primarily a Bass player, I figured it was time to find a Bass forum. It seems like I got lucky finding one with members that are knowlegable and experienced. I've done a bit of looking around and didn't really find an answer for this. For several years (5-6) I was using a couple of the Seymour Duncan 600w bass heads (one as an unnecessary spare) pushing a SWR Goliath and SWR Triad. As the Duncans were old, I thought it was time to get a "new" head and opted for a SWR Bass 750. To make an excessively long story short, the Bass 750 blew up, and never worked right. I assumed it was just a lemon, and when I got a great deal on a brand new SWR SM-900 I jumped on it. To make a not quite as long story short, in the past almost 2 years the amp has failed 3 times (on stage) and been in the shop 6 times (where it currently is). The store where I bought the amp may be attempting to make this right, and by that I hope that means taking the SM-900 and getting me a monster bass head with no loss to myself. A few years ago I checked out the Mesa M-Pulse 600 and thought it was a great amp, would anyone have any idea how the two would compare? Thanks!