I have a 4 Punch 30's, 2 Punch 45's, 2 Punch 45 HD's, 1 Punch 75, 1 Punch 75 HD, 2 Punch 150, another Punch 150HD all work and have knobs. I have 2 Power 300's 2 Power 650's (one is near mint), 3 Power 1000's. 4 RF Power PWR-812's w/ chrome magnets , 2 RF Power PWR-412's w/ chrome magnets, 2 Punch 12's (grey) 2 RF Audiophile 12's, 3 RF Punch (regular dust cap not inverted) 10's, 1 Power 10 (black). 2 RF PA-1's, 2 OEQ-1's, 2 Symmetry EPX 2 (one has 28b card). I have a huge collection of a lot of other old school audio and need to start letting some of it go. Contact me if you are interested in something.