Re: The DSL Marshall combo 40 watt amp
Ive got a 1923c (DSL 50 combo). Im pretty sure you cant swap the power tube types, but you can always get some KT77's or EL34B's for more 6L6ish tones. Just make sure there is clearance for bigger bottle tubes like 6ca7's. It can definitely do blues, classic rock, and takes pedals well. The clean tone is pretty nice too.
I also run a 2x12 ext cab with G12-65 like speakers this will help with the highs.
Speakers help. However I've found most of the b*$%#ing involved when criticizing these amps, and I admit to doing some of it, comes from users who aren't in the position to play these amps at the sound levels they were intended to be played at, which would be cranked.