Replacement Parts for Guitar Amplifiers, Synthesizers and Digital Keyboards by Fender, Ampeg, Marshall, Vox, Moog, Arp, Yamaha, Korg, Roland, Sequential Circuits, Oberheim, Rhodes, Wurlitzer, Kurzweil, Akai, and M-Audio, including Tactile Switches, USB Jacks, Phone Jacks, Power Jacks, Floppy Drive Belts. Synthesizer Batteries, Replacement Keys, Keyboard Contact Strips, Amplifier Knobs, Synth Knobs.