Hey Fellas , EB'er here but I scored an amp some of you know well so I'd thought I'd ask . An old AI Focus 600 watter . I'll be using it 100% for Electric bass , Fender '51 style , Dingwall AB-1 all over the map there but I was wondering which input you prefer to use most of the time . I just got it and fired it up with a EA wizzy 12 and it sounds fantastic , in fact I liked on both of those inputs very much so I'm not sure if I should stick with one or the other perhaps there is a more noticeable difference with a acoustic bass pickup ? With the single coil use mostly it has a wonderful tone either way .Kind of a head scratcher but I thought I would need a preamp too but it seems just fine without one but I'm ready with a BDDI or belt clip Sadowsky outboard and I'll give it a whirl later for fun. Cool amp though , Cheers