I would type a better review if I ever receive a working unit or a refund so this will have to do. Right out of the box, this unit did not last even a few minutes. This unit had a defective reverb channel as well, it wouldn’t turn off even when you moved the knob. When the reverb was on, it would make a terrible repeating popping noise. Upon warming up the unit, the change tube light would go and no sound could be made when linked with a guitar. After changing the tubes, it would still be defective with the same problems. This all happened within warranty right out of the box. Don’t buy these, I thought they would be good upon previous reviews.