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Roland PSB-120 Keyboard AC Power Supply Adapter — main product image
Roland PSB-120 Keyboard AC Power Supply Adapter
Roland PSB-120 Keyboard AC Power Supply Adapter
Roland PSB-120 Keyboard AC Power Supply Adapter
Roland

Roland PSB-120 Keyboard AC Power Supply Adapter

★★★★★4.7 (600 reviews)

Power your Roland keyboards and devices reliably with this universal-voltage 9V DC adapter that replaces multiple legacy models.

$47.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The Roland PSB-120 is an official AC power adapter designed to provide clean, stable 9V DC power to Roland electronic keyboards, synthesizers, and other compatible devices. With a 2000mA output capacity, it delivers enough current to handle demanding instruments without the voltage sag or noise that cheaper third-party adapters can introduce. Its center-negative, sleeve-positive polarity matches the Roland standard, eliminating any risk of damage from incorrect wiring — a genuine concern when using generic power supplies.

One of the PSB-120's most practical features is its universal input voltage range of 100-240V AC at 50-60Hz, which allows it to work with power grids around the world. For gigging and touring musicians, this means one less thing to worry about when crossing borders. The PSB-120 also consolidates several older Roland adapter models — the ACB-120, ACF-120, ACK-120, and ACI-120 — into a single current-production unit, making it straightforward to find a replacement if your original adapter has been lost or worn out.

Key Features

AC power adapter with cord

PSB-1U Equivalent - Replaces: ACB-120, ACF-120, ACK-120, ACI-120

Input Voltage Range: 100-240V AC, 50-60Hz, Output Voltage: 9V DC, Output Amps: 2000mA

Sleeve/Tip Configuration: Sleeve: Positive, Tip/Center: Negative

Compatibility: Roland devices

Specifications

Brand
Roland
Model
PSB-120
Input Voltage
100-240V AC, 50-60Hz
Output Voltage
9V DC
Output Current
2000mA (2A)
Polarity
Sleeve: Positive, Tip/Center: Negative
Equivalent To
PSB-1U
Replaces
ACB-120, ACF-120, ACK-120, ACI-120
Compatibility
Roland devices

Pros & Cons

👍 Pros

  • Universal 100-240V input works in any country without a voltage converter
  • Replaces multiple discontinued Roland adapter models, making it easy to find a compatible power supply
  • 2000mA output provides ample current for power-hungry keyboards and multi-effects units
  • Official Roland product ensures correct polarity and voltage for safe, reliable operation

👎 Cons

  • Center-negative polarity is incompatible with most non-Roland devices, limiting versatility
  • No USB output or secondary power port for charging other devices
  • Cable length may be short for setups where the power outlet is far from the instrument
  • Higher price than generic third-party 9V adapters

Frequently Asked Questions

The PSB-120 is equivalent to the PSB-1U and directly replaces the ACB-120, ACF-120, ACK-120, and ACI-120 adapters.
The PSB-120 uses a center-negative (tip-negative) and sleeve-positive configuration, which is the standard polarity for Roland devices.
Yes, the PSB-120 accepts input voltages from 100V to 240V AC at 50-60Hz, so it works with power outlets worldwide. You may need a physical plug adapter for different outlet shapes.
The PSB-120 outputs 9V DC at 2000mA (2A), providing sufficient power for a wide range of Roland electronic instruments.
It is designed for Roland devices. While it may physically fit other 9V DC devices, the center-negative polarity is the opposite of most other brands, so using it with non-Roland gear could cause damage.

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