So I have had this amp for a few months now and I must say it was a smart buy. I have 4 amps and this one just keeps impressing me. Such a big band for the buck. I switched the V2 tube today to a Mullard after also trying a TungSol. Each tube gives it a little different tone and voice in this position. It almost makes the amp a new experience. I am very happy with it. Being a Marshall guy and going for a more souped up Classic Rock tone the amp is really almost there. The one thing I really want to try in the future is EL34's in the power section.