The Supro 1970RK Keeley Custom is a collaboration with the famed pedal whisperers at Keeley Electronics to make for the ultimate pedal platform. With a high-headroom preamp and a Zinky-designed Class-A power section, the Keeley Custom gives you a transparent front end for your drive pedals and effects while pushing out that signature, touch-sensitive Supro tone through a custom-voiced 10" speaker.