Im looking to buy a used JCM 800, most likely the 1x12 50w version. Does anyone know of any quality issues I should look at closely, or any common problems that these have had. And anyone have one and how do you like it?

I bought a 4104 off a local (2x12 50w).
No problems so far I only had to re-tube her. The 800's are built like tanks so I wouldn't worry about picking up a faulty amp but of cause try before you buy just to be safe.
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