I found a very nice old Traynor Ygl-3a MArk III for 265.00 U.S. I believe this is the 100 watt TRaynor with the master volume.I am going to get it, but wondering if this is an all tube amp. Any comments on this particualr old Traynor amplifier? Can it be modified to plexi/Bassman like the YSR-1 which i have? Hows the master volume on the amp, and how does the amp sound? Ive heard it described as a " Fender Twin on steroids". It's supposed to get a pretty close shimmery Fender sound? Theres not much on this amp on the web, but i havent checked Harmony Central yet.