I just won this V-4 on eBay. It is listed as a late 70s Magnavox era. Ampet VT-22 V-4 All Tube Made in USA Magnavox Guitar Amp | eBay Questions: 1) $377, shipped seems like a darn good price, yes? Is there something about this one that I didn't catch that made it go for so cheap? Or is it maybe just that the listing title said "Ampet" instead of "Ampeg", so some folks that might have bid on it missed it in their searches? 2) I read all I could find here on TB about the differences between the V-4 and V-4B. One thread had info about 3 capacitors that are different in the input section that provide a low frequency roll-off. According to the poster of that info, the V-4 rows off the low end about 10 Hz higher than the V-4B. Other folks posted that this doesn't seem to make any significant difference to the sound, but they seem to be posters who play 4-stringers. Can anybody comment on whether this would be more of an issue when playing a 5-string through it? 3) If I take it to a good tech to have the capacitors on one of the input channels changed over to V-4B specs (which, as I understand it should just be 2 caps), about how much should I be prepared to pay for that? I'm guessing 1 hour labor and a dollar or two worth of parts? 4) In the stock amp, is there any difference between the 2 input channels? If not, why does it even have 2 input channels? Is there a reason to ever use both when using the amp for bass? 5) Is there a "recommended" list of modifications that I should consider for using the V-4 for bass? It appears to already have a 3-prong plug. Should I: - change both input channels to V-4B specs? Change one and leave the other stock (though that would still mean changing one cap that is common to both), so it would still have full re-sale value to guitar players? - change both inputs to V-4B specs and have one modified to have a -10 or -15db pad for use with an active bass? - change the polarity switch to do something else (since I assume it's superfluous with the amp having a 3-prong plug on it)? If so, what? - leave it the fark alone and just go play, dummy? Thanks in advance for any help!