OD820

The Maxon OD820 Overdrive Pro is a clean booster/overdrive pedal designed specifically for tube amps. It offers a fuller frequency response and less noise, making it extremely responsive to fingering and picking touch. The pedal features a dual-purpose Drive control with Clean Blend function and operates at 18 volts for additional headroom, although it can be powered off 9 VDC. The OD820 provides low impedance, mechanical bypass switching.

Technical Specifications:
- Input Impedance: 500K Ohms
- Input Jack: 1/4 inch standard phone jack
- Output Impedance: 10K Ohms or less
- Output Jack: 1/4 inch standard phone jack
- Equivalent Input Noise: -107 dB (VR Max)
- Residual Noise: -98 dB (Level, VR Min)
- Maximum Gain: +46 dB (VR max) (at 1 KHz)
- Maximum Amplitude: +16 dB (At 1 KHz)
- Controls: Drive, Tone, Level
- Switch: Normal/Effect (true bypass configuration)
- Power Supply: 9V Manganese dry cell battery (S-006P) or special AC adaptor
- Power Voltage: DC9 V (Battery) / DC10 V (AC-adaptor)
- Current Consumption: 19 mA (10 VDC)
- Dimensions (whole): 117 mm (W) x 150 mm (D) x 60 mm (H)
- Weight: 500 g

The OD820 circuit is a hot-rodded 808 with a JFET input buffer, dual-gang Drive pot, and standard 808-style tone control. It runs at 18 volts via an internal voltage doubler, providing greater output and a fuller frequency response. The pedal features buffered, mechanical bypass switching with a low impedance output, allowing it to drive long cable lengths or other effect units without loss of signal.

The Maxon OD820 Overdrive Pro is a versatile pedal suitable for guitarists seeking a transparent overdrive with enhanced headroom and dynamic response.