It would be a good idea to add the specifications of this product ... volts, mA, polarity, etc

9 volts DC (direct current) output. 500ma. Regulated. Tip negative. Sleeve positive. 3 meter cord. Status light flashes to indicate grounding problems. "Space saving" design compared to traditional adapters to allow multiple adapters to connect adjacent to each other on common outlet strips.

Is this genuine Boss/Roland product or 3rd party copy?

The box says "Roland Corporation" and "Made in China". If this is a 3rd party copy how would I know? It sure looks like its genuine to me.

Will BossPSA-120S power Adapter power Boss Digital Recorder MICRO BR (requires 3v dc)

It works on the Boss Roland BR-80 Portable Digital Recorder (http://smile.amazon.com/gp/product/B0052W4188/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1). I also recommend this case to protect it while carrying it around (http://smile.amazon.com/gp/product/B002VPE1QG/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1).

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Description

⚡ Power your sound, own the stage.

SMART LED STATUS - Instant visual confirmation with a bright LED indicator, so you never guess if your power is on.
SPACE SAVING DESIGN - Innovative form factor that won’t block adjacent outlets—maximize your power strip real estate.
EXTENDED REACH FREEDOM - Nearly 10 feet of cable length lets you position your gear exactly where you want—no compromises.
UNIVERSAL COMPATIBILITY - Optimized for all BOSS compact pedals, multi-effects, tuners, and more—one adapter to rule your rig.
RELIABLE HIGH POWER DELIVERY - 120 watts of clean, consistent power to keep your digital pedals and instruments running flawlessly.

The BOSS PSA-120S is a 120W power adapter designed for modern digital instruments and pedals, featuring a long 10-foot cable, LED power indicator, and a compact design that preserves adjacent outlet access. Ideal for powering multiple BOSS devices simultaneously with reliable, clean energy.

Specifications

Brand	BOSS
Manufacturer	BOSS
Model	PSA-120S
Model Name	PSA-120S
Model Year	2017
Product Dimensions	10.16 x 7.62 x 5.08 cm; 150 g
Batteries	1 9V batteries required.
Item model number	PSA-120S
Compatible Devices	Game Consoles
Special Features	Travel
Mounting Hardware	Power Cord
Number of items	1
Colour Screen	No
Wattage	120 Watts
Power Source	Corded Electric
Batteries Included	No
Batteries Required	No
Battery cell composition	Alkaline
Connector Type	USB
Mounting Type	Wall Mount
Includes Rechargeable Battery	No
Includes AC Adapter	Yes
Includes remote	No
Manufacturer	BOSS
Item Weight	150 g

Reviews

J**R

A must for Boss DB-90 Dr. Beat Metronome.

The recommended adapter for most Boss products. I got it for my Boss DB-90 Dr. Beat Metronome. Now no worries about batteries. It is well built and hardy product. An original Boss. Highly recommended for professional musicians and students.

31.03.2017

K**G

Satistfied.

It's original roland boss adaptor for boss gt1.Amazon diliverd it too fast.Totally satisfied.

13.09.2017

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