Re: Why are the JCM2000 combo amps cheaper than the heads?
The DSL401 is a beginner's tube amp. It has alot of corners cut to bring the price down- lack of a presence control (essential to any tube amp), doesn't have the low end bass boost switch of the head, it uses much cheaper, smaller EL84 tubes, the cabinet is made from a cheap quality MDF chipboard, and the effects loop isn't that great. It also has a cheaper grade Celestion speaker in it. I had one, eventually traded it in towards a REAL amp, a JCM800 2x12 combo.
The DSL 50 is a great amp, it has 2 EL34's, which reduce the price slightly from the DSL100. Lack of a speaker also makes it cheaper. So that's why it may be closer in price to the DSL401.
I think Marshall has a 60 watt 2x12, though it may only be the TSL series. Those ones have EL34's and tend to be pricey, and are built very well