I've been trying to like this thing with all my heart. I've adjusted setting until I'm blue in the face and still can't find that high gain sound I like. I just ordered another Randall RD100(sold my last RD), I love the high gain tones from it. Is it possible I like the sound of 6L6 power tubes more? Can anyone tell me if there is anything I can try on the JVM as I want to love it!! Maybe preamp tubes?