

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.
Watch the latest video demos and reviews for the OD820 from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.
Below are live Reverb listings for the Maxon OD820 from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.
Excellent
$150
Good
$150
Very Good
$159.99
Brand New
$224.23
Very Good
$166.47
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