As close as I've come to playing a Dumble or a clone is my Zendrive through the Gries 35. It sounds great and whether it's close, or not so close I'm happy. A couple months back I bought a Jetter 45/100 for Marshall tones and am loving that, too. I needed something different after using the Zendrive for so long. As for the Bassman/Tubescreamer quote...that person has probably never plugged in to more than an 80s solid state Crate amp.