Does anybody out there have one of these things? The thing is loud but it doesn't have the best sound. I preamp with a SansAmp Bass Driver DI stomp box (which i always leave on). I'm looking for a good, hard rock sound. Does anyone know the ideal settings I can use to tweak this amp ? No matter what I do the tone sounds muddy and inarticulate. I'm thinking about buying a new amp, possible a mesa, but for now I'm just trying to make due with what I have.