Bass Amp This was posted in the Madison craigslist for $75 yesterday. I called inquiring and never heard back. Today I notice it is in the Dubuque, IA CL for $300. I'm not sure what the model is, it looks like it is a beta bass 1x15 combo. The seller is saying it is a 1x12 combo. I couldn't find any info on it. So I ask your expertise. What model is it?