Hi, I have a 60' Bass Mate YBA-2 (1x15 combo) that I have some questions about. First, it has two inputs. Channel II seems to be a treble boost, is that correct? Secondly, I'm interested in installing some outputs (balanced DI & ext speaker). Has anyone done this? Do you think the balanced DI would make it a good tube preamp for recording? Thirdly, I'm interested in any mods that would improve the sound. I'm mainly looking to use it for recording, and the odd low volume gig. Fourth, I'm looking for mic suggestions or placement suggestions. Any tips for recording this amp, tube amps, of 15 speakers. Fifth, it only has two knobs (volume and tone). Do you have any suggestions for tonal variation? I have a sansamp bass driver, Sadowski preamp, and Aphex Bass Xciter. Any tips for using these with the Bass Mate? Thanks you! Any suggestions/info would be much appreciated!