The PSB7 series is the official power supply for Roland and BOSS products that specify a PSB-7U adaptor.
Input Voltage: AC 100--240 V (50--60 Hz)
Output Voltage: DC 12 V
Maximum current output: 4 A
Power cord (for 117 V, length 1 m / 3 ft. 3 inches, weight 60 g / 3 oz)*
*Weight varies depending on region. Also available in 230 V and 240 V versions.
Dimensions (excluding protruding parts and cable): 101 x 51 x 31 mm (4 x 2 x 1-1/4 inches)
Weight: 236 g 9 oz
Cable length: 1.5 m (4 ft. 11 inches)