"Organ Grinder" multi stage analog FET preamp/overdrive
"Gear Grinder" multi stage analog FET preamp/overdrive STEREO
"Wurly Grinder" electric piano overdrive
"Tall & Fat" multi stage analog FET preamp
"Tall, Fat & Wide" multi stage analog FET preamp STEREO
"Wurly Grinder Stereo" electric piano overdrive
"Mo Bass" preamp bass drive pedal