The Revv D20 is a compact “lunchbox” head with a straightforward design and some surprisingly useful features. It can be switched to an internal load, allowing for silent operation through headphones thanks to the onboard IR cabinet simulator.This is a 20W, 2x6V6 design that covers a wide range of tones, from clean to nicely overdriven sounds. The amp is in very good condition, showing only minor signs of previous wear, and it comes with a padded Revv case.