Dsl 401... Hmmm half right Tav... I bought a dsl-401 some time back, nice tone sure....not so hot on reliability....the dsl 401 runs very very hot....after a couple of hours the control panel can reach 50 odd degrees C+...while under warranty it failed, the tone was accompanied by a high pitched squeal followed by the tone fading a way completely...read the reviews...its a common problem...sent the amp back to Marshall and it took over six weeks to get it back...two months after that the reverb dried up.... ..in short good tone...its got an aux amp drive output as well so you could also use it to drive a cab and get a little more bass...but reliability aint what it used to be...