Boss SD-1 Super Over Drive Effect Pedal

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The Boss SD-1 Over Drive pedal was first released in 1981 and uses the same basic circuitry as the OD-1 Over Drive.

Controls: Level, Tone, Drive
Connectors: Input, Output, AC Adaptor
Current Draw: 4 mA (DC 9V)
Nominal Input Level: -20dBu
Input Impedance: 470kOhm / 1MOhm
Nominal Output Level: -20dBu
Output Impedance: 1kOhm
Residual Noise Level: -110dBm (IHF-A Weighted, Typ.)