Boss PSA-120S2 Power Adapter

Use this adapter to power most of your pedals and devices that require 9 volts. The PSA-120S2 complies with updated US energy efficiency requirements.

Boss PSA-120S Power Supply

No longer available at zZounds
The Boss PSA-120S is your solution to powering most Boss products. For compact and twin pedals, ME-series boards and more, the PSA-120S is your power supply.

The PSA120S is the recommended power supply for products including the BOSS Compact and Twin pedals, ME-50/-20/-20B Multi-effects, the DB-66/-88/-90 metronomes, DR-Series drum machines (except DR-880 and DR-770), FC-Series foot controllers, MC-202, SH-101, SP-202, TR-626, and all TU-Series tuners.


- Next generation power supply for today's digital instruments
- 500 mA of current to easily power multiple pedals, even digital ones
- Power cable length is increased to almost 10 feet
- LED indicator for quick visual verification of on/off status
- Design which does not cover adjacent power outlets

- Input Voltage: AC 117 V (50Hz/60Hz)
- Output Voltage: DC 9 V
- Maximum Current Output: 500 mA
- Width: 27.8 mm, 1-1/8 inches
- Depth: 43 mm, 1-3/4 inches
- Height: 63 mm, 2-1/2 inches
- Weight: 150 g, 6 oz.

For support or warranty questions, please contact the manufacturer:
Phone: 323-890-3700

Reviewers gave this product an overall rating of 5 out of 5 stars. (7 ratings)
Submitted March 27, 2010 by a customer from

"Buy it without worry. It's Fine."

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
I've never had a power supply for all of my electronics by Boss or other products go bad...and that's after years of use. I've only lost them!
Does exactly what it is supposed to do and that is to act as a power supply. Unlike these other guys I have had no problems with it. Because of the reviews I called Boss before purchasing this. They told me they had no calls involving problems with this unit. So, buy without worry. You will get a good product. If there were so many defective ones, Boss told me they would recall them and put another one out, but they didn't expect to have to do this.
See Above
Cost is fine.
Manufacturer Support
Fantastic service every time.

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