Roland PSA-120S

9-volt, 500mA AC Power Supply for BOSS and Roland Effects
Roland PSA-120S image 1
Roland PSA-120S image 1
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Roland PSA-120S
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Get the right BOSS Power Supply!

The Roland/BOSS PSA-120 adapter converts AC wall current to 9 volts DC current. If you want to save money on batteries and ensure stable performance gig after gig, the BOSS PSA-120 adapter is the recommended power supply unit for products including many BOSS compact pedals, the DB-66/88 metronomes, FC-Series foot controllers, MC-202, SH-101, SP-202, TR-626, and all TU-Series tuners. Capable of powering any BOSS effect pedal, the Roland/BOSS PSA-120 can also power equipment with digital circuitry.

Roland/BOSS PSA-120 Features
  • Capable of powering any BOSS effect pedal, including those with digital circuitry.
  • Converts AC wall current to 9 volts DC current. Power supply designed to operate a multitude of BOSS and Roland products.
  • Regulated with a higher milliamp rating for use with digital equipment.
  • Output: DC9V (regulated), 500mA
  • Tip negative, sleeve positive
  • 3-meter cable
  • Status light that flashes if there are grounding problems
  • Small footprint (similar to a cell phone charger)
For consistent effects pedal performance night after night, gig after gig, choose the Roland/BOSS PSA-120 AC adapter!

Tech Specs

Output Amps 500mA
Output Voltage 9V
Sleeve/Tip Configuration Tip: Negative
Manufacturer Part Number PSA-120S

Customer Reviews

Based on 26 reviews
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Nothing Like the Best

If your looking for great quality equipment at great prices .With the best service reps with Knowledge of not just what they are selling you but the understanding of what else you might need to accomplish your goal. Well Welcome to Sweetwater the best place to buy everything.

This power supply is a winner

I power my entire pedal board with this one supply. With 500 mA I can power 7-8 pedals in a daisy chain with no problem. Very good quality and works perfect with no noise. I have own this power supply for over two years with no problems whatsoever. This one is a winner and you cannot beat the price.
Music background: Professional musician

for Boss MT-2

Just got this so my pedal could have power. i like it.

Works great

Got this to power my DD-20 delay because it burned through batteries like nobody's business, I've been using it with a TU-3+parallel cord so it powers both pedals. It has a really long cord, so even if the outlet isn't close you have a good chance of reaching it. Overall, another good Roland product.
Music background: Former Worship leader/Backup Acoustic


Works perfect with my BOSS VE-20.
Music background: Hobbyist
See also: Power Adapters, Roland, Roland Power Supplies