A couple of questions first. Aren't their power stages similar? What about their preamp stages? Can't a TSL be dialed in to sound exactly like a DSL in any mode? In what way are TSLs inferior than DSLs soundwise and design-wise. I have played both TSLs and DSLs and I cannot see why people trash these amps so badly... I found their crunch channel really good for hard rock tones and I love it. The cleans are pretty nice too and they can be set seperately from the dist. channel. I am contemplating in getting another Marshall and I am torn between a JVM vs a TSL combo in 1x12 format. I tend to prefer the TSL from what I have heard.