PS. Email me privately about he slight hum with all controls off. That's the way the original ones were, and even the genius who maintains equipment for many national acts, including Joe Walsh could not come up with a fix (see the schematic suggesting a fix from the manufacturer...it didn't work). It's easy to leave one knob on, use a standby switch on a Fender amp or any device like a tuner or on-off switch to control the issue. Let me know...