I hear something good, I just have to have it. I have like... 4 Marshalls here so this is another Marshall but it's not about restricting myself from being excessive with a particular brand name- heck, no. It's about hearing something good & giving it due credit.
I've been spending some time with the new Marshall DSL40C today & it sounded good. This is a reiteration that it sounds quite removed from its 'DSL' predecessor in drive mode. I know the difference personally because I used to own the DSL401 combo. If you think you want a rounder Brit grit, you are better off with the MA series. The new DSL is an angry amp, that's what I like about it. It's more fruitful taming an angry amp to manifest a degree of politeness but it's not as breezy injecting ferocity into a gracious amp.
Here's how it looks at the rear, it's not entirely a 'closed-back' unit. That switch you see there is the half-switch; it reduces the amp to half power.