I saw this on Craigslist: All original 1977 Traynor YBA-1. I say this knowing the transformer has been replaced with an actual 60's Traynor YBA transformer. I do have the original 77 transformer that went with the amp though so you truly can restore it to be completely original. The only other thing that is missing/different is that it's missing the Traynor logo that sits on the grill of the head. One thing to note is that this Traynor (as were most old Traynors) is set to run on 8ohm cabs. Good working condition. No real damage to the chassis. All tube, and handwired. The pots on the "Normal" channels are a little scratchy, but that is an easy fix. Will part with this separately for $300. https://sfbay.craigslist.org/sby/msg/4404776740.html The ad goes on to say how well the amp breaks up etc. Has this been modified to sound better with a guitar? Will I need to put the original transformer back to play bass on this? I really would like a small tube amp and their are a number of old Traynors around. This one seems like a good price.