The Boss PSM-5 Power Supply & Master Switch is a classic utility pedal designed to manage both power distribution and master bypass control for multiple effects. Made in Japan, it is valued for its straightforward functionality and durable circuitry. This particular unit is in very poor aesthetic condition, with heavy cosmetic wear, scratches, and an overall rough appearance. Despite the worn exterior, it remains fully functional and continues to deliver the reliable switching and power-routing performance for which the PSM-5 is known.
The pedal’s master bypass switch allows players to activate or deactivate an entire effects chain using its effects loop with a single foot press. When powered by a Boss ACA/PSA adapter (not included unless specified in the title), the PSM-5 can also distribute regulated 9V DC to compatible pedals. Additional send/return jacks, standard input/output connections, and multiple power outputs make it an efficient utility hub for compact or vintage-style pedalboard setups.
Although heavily worn on the outside, this Japanese-made PSM-5 remains a dependable working unit, suitable for musicians who prioritize functionality over appearance and want a practical vintage Boss utility pedal.
Please review the photos carefully to assess the signs of use and included accessories. All photos are of the actual products. No accessories are included unless photographed and/or named.
