I'm just wondering what the differences are between the Showman and the Dual Showman amp.. I think I'm going to want to grab one of these soon, it looks like my band is going to start playing small bars within a few months. How hard is it to find one of these and is there any problems with using these for bass? I've seen quite a few people use them for bass. And what should I expect to pay for just the head? Given that it is in perfect working order, cosmetic damage is of no big concern to me. What about with the matching 2x12" cab?