a few weeks ago I picked up my first tube head, an early 70's(?) ampeg v4b. i just got it back from the shop today. it got a full cleaning, new power cable, and new tubes. of course now that i've brought it home, my sister's taking a nap. so since i have to wait to turn it on, i figured i'd ask a few questions and get some answers and opinions. this is my first tube amp so i apologize if any of these questions seem ever so obvious. i've been reading through a bunch of old threads on this amp, but figured i could get a straight forward answer/suggestion or two. Question number 1: 2 inputs? i've read that they're 2 seperate preamps, each with their own volume control. any differences at all? the only use i could really think of for this would be to use one for my active and one for my passive basses, so i don't have to contantly change volumes? any other suggestions? Question number 2: the two ext amp output jacks on back... are these for running slave/power amps? how are they affected by the volume knobs? Question number 3: i was told that tube amps need time to warm up, and i've seen bands plug in their amps a few sets early, presumably for this purpose. i understand the idea, but how much warm up time should i give it? any other thoughts/suggestions are greatly, greatly appreciated. if it wasn't for the advice i've gotten from you folks, i probably would not have realized what a good deal i got on this amp and i may have missed out.