Recently, my band went to the singers house for practice.He had some old stuff laying around like a '60 Epiphone acoustic and a '66 fender strat but one thing that caught my eye was an old Music Man tube amp. I have never seen one of these before. It had passive and active inputs and also an input for bass ( 3 total ). The thing sounded great. The problem is its his brothers who isn't in a band and never uses it. I was thinking of buying it off him and I was wondering if any of you guys know how its worth and what a reasonable offer would be.