I bought this Marshall head a year or two ago. I probably should have passed on it with the replaced output and power transformers and the other wiring that was done but I didn't. I didn't realize how much was missing or replaced until I went to the Marshall forum and was enlightened. That left me with a choice of either selling the amp and taking a loss because I would inform the prospective buyers about everything I knew or having a restoration job done on the amp. Because it was the early '73 JMP with a hand wired board and not the printed circuit board, I chose the former. So, it had a catastrophic event at some point that lead to the power transformer burning up. It had been wired in a weird way that it never really had much crunch to it but instead had high headroom and really nice cleans. I just wanted it back to stock as much as possible. I couldn't find a period correct Drake PT or OT so I decided to go with Metropoulos transformers. The feet/gliders were wrong so I found the right ones. The knobs were wrong so I got the right ones as well as the right resistors, power and standby switch, indicator light, correct bolts and PT transformer mounting bracket. Here's what it looked like before: Here's what it looks like now: It sounds SO much better. It has the CRUNCH we all love about Marshalls. Well, I didn't have a 4X12 Marshall cab so that was a problem for me. I wanted a '73 cab to go with the head. I looked around but there were none near me that I could find so I went to Reverb. Vintage Marshall cabs are expensive to buy and expensive to ship and most sellers won't ship at all. And when they do, a LOT of them are just empty cabs. I had to settle for an empty cab. I bought one in decent shape but I still needed speakers. I found some '72 Celestions but they were in the UK and they weren't G12Ms or G12Hs, they were G12S. The "S" stands for "small" magnet. "M" stands for "medium" and "H" stands for "heavy". Just as there are folks who like heavy magnets over medium magnets, there are folks who prefer small magnets so I bought them. One had an advertised tear in the diaphragm and two had misaligned voice coils so i had to send them to a fellow in FL who restored them as opposed to re-coning them. I didn't want them re-coned. He repaired and restored them by cleaning them up, aligning the voice coils and re-gluing the diaphragms. I patched the grill cloth a bit, replaced missing screws and installed the speakers and re-wired the cab with correct wire. I also installed a bit of felt to keep the back panel from vibrating against the center cab post. The casters were missing so I had to find those, which I did.