This is a used Korg A5 Bass Performance Signal Processor, a multi-effects pedal designed for bass guitarists. The unit is in used condition, and free shipping is offered. As a multi-FX processor, it provides a range of signal processing tools suitable for practice，live performance，or studio recording. Bass players looking to expand their tonal palette with a single pedalboard unit may find this a practical option. Since this is a used item，potential buyers should review the listing for complete details on its current state and any included accessories. Check the listing for full details on functionality and cosmetic condition. Korg A5 Bass Performance Signal Processor Multi Effect / Multi-FX/ Guitar Pedal. Condition: Used. Listed at 137.00 USD. Korg A5 Multi-FX/Guitar. Simon Trask test drives them and discovers guitar distortion works for drum machines.