I have a DSL 100 and i wish id bought the 50. Ive had to buy a volumiser to control the volume while cranking the amp to get the most out of the valves. Having said that, the 100watts comes in handy for DIY shows. And even with out the external volume control, i still get a pretty decent cranked sound on stage. What ever you do, if youre buying Marshall - stay away from the AVT series. They are poor amps.