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Boss OD-3 effect pedal specifications

Nominal Input Level -20 dBu
Input Impedance 1 M ohms
Nominal Output Level -20 dBu
Output Impedance 1 k ohms
Equivalent Input Noise Level -115 dBu (IHF-A Weighted, Typ.)
Connectors INPUT Jack, OUTPUT Jack, AC Adaptor Jack (DC 9 V)
Power Supply DC 9 V: Dry Battery 9 V type (6F22/9 V), AC Adaptor
Current Draw 9 mA (DC 9 V)
Accessories Dry Battery 9 V type (6F22/9 V)
Option AC Adaptor (PSA-Series)
SIZE AND WEIGHT ( INCL. BATTERY )
Width 73 mm 2-7/8 inches
Depth 129 mm 5-1/8 inches
Height 59 mm 2-3/8 inches
Weight 410 g 0 lbs. 15 oz.