Here's we look at and discuss the schematic, interior construction, and tone of the Traynor YSR-1 Custom Reverb. Traynor amps are very high build quality, easily rivaling Fender and Marshall at the time this was made. The transformers are massive, made by Hammond. Original Gibbs spring reverb. In fact, other than the changes I made - adding a 3-prong cord, removing death cap, repairing reverb tank, and cleaning - this one appeared to be 100% original.