This was my teacher's pedal, who gave me his electric viola along with this pedal board, after he stopped performing. It has travelled but was well cared for. It works perfectly and only has some cosmetic scratches. Comes with power supply.

The AG Stomp physically models a miked‑up acoustic guitar sound using the DI signal from an acoustic guitar piezo pickup, and also offers a variety of useful effects processors.

Yamaha's AG Stomp is a digital floor‑standing processor designed for use with acoustic guitars fitted with piezo pickup systems, its aim being to process the pickup sound so that it sounds more 'miked up'. Applications include both live performance and recording, plus there's a useful headphone output for rehearsal purposes.