Re: Marshall JCM 600 head ?
I had a JCM 600 combo for a while, and it was a great amp. Nice, nice cleans, and really decent OD. It's not a metal amp, but will cover most other styles very well. The clean channel takes pedals very well also.
I purchased a JCM 800 combo shortly after I bought the 600 just because a good deal became available, but it was a hard decision to get rid of the 600. Stock it was a hell of an amp. I think I could have coaxed some even better tones out of it with some tube changes and a speaker swap...the stock speakers were just so so.
If I was looking for a Marshall, but not wanting to spend a ton of $$, I would not hesistate to pick one up. IIRC, Tom M here on the board had his 600 2x12 up for sale a month or so ago... $500. It's the same unit I had...I sold it to him.