The first day I drove 5 hours almost to the Atlantic ocean (I live in southern France) to see the first 4010 combo with my strat. Turned up the master to 3 1/2 and the preamp to 10 and there was no distortion. Right then and there, I told the guy I didn't like the sound of it and I left. 10 hours of driving for nothing. I was a little dismayed... So yesterday I went to look at combo #2. Three hours in the other direction. And this one was a total winner. Had the same settings as above but this time I brought my les paul classic with 1970s super distortion in the bridge. I plugged it into the amp and it just sang. The distortion was beautiful. No pedals. Just crazy good amp. I paid 850 euros ($1040) for it. The owner believes that everything is original on it including the power tubes and caps. He says two preamp tubes have been changed (V1 and V2) but he's not aware of any other modifications. I took it apart this afternoon and took lots of pictures. @Georgiatec (Tony) put together a set of vintage tubes for me and has sent them to me. I will bias the amp when I get them. Please let me know if you think you see any modifications and also what parts I should replace (filter caps etc.). Here is the front. Looks pretty good. There is a slight stain under SH of Marshall. I think that is vintage dog pee or something... And here is the back, set to 230V for France. Here is the inspection label dated April 15, 1983. Here are the Drake choke and transformers. They are in really good condition. Pretty shiny. A little rust on the choke. and the filter caps. And here is one of the power tubes. This is an ITT Lorenz EL34 (which I think is a relabled Siemens) and was installed by Marshall. Original power tubes!!