Re: JCM 2000 DSL
I recently bought the 40 watt combo version of the DSL. I absolutely love the red channel for a warm, Eric Johnson-like tone. I tend to over-do the warmth and dime the mids while keeping the treble low, and bass around 6. The more volume, the better. That's just me.
I initially liked the first overdrive (yellow) channel but I've soured on it a bit. It doesn't take overdrive pedals very well to give it a boost, so I use it only selectively without adding any additional overdrive to it.
The green channel works fine and it is a typical Marshall clean channel... and this takes overdrive pedals very well in my opinion.
I haven't played through the 50 or 100 watters very much, just a bit in a showroom. But if the combo is anything like those, I view the DSL as having a sweet spot tone that, once its discovered, is worth the $$. It may be fussy, and get overheated at times, but the extra work is worth it. I guess it's like a marriage to a high-maintenance woman. No, I'm not married.