Seymour Duncan 805 Overdrive

• Pedal Type: Classic Overdrive / Low-to-Medium Gain Drive

• Controls: Level and Drive Knobs; Active Bass, Mid, and Treble Knobs

• Bypass Layout: True Bypass Switching

• Power Requirements: 9VDC to 18VDC Regulated Input (Center Negative Only) or Single 9V Battery

• Current Draw: 4.5 mA

• Dimensions: 2.61” × 4.90” × 1.45” (66.3 mm x 124.5 mm x 36.8 mm)

Upgraded Vintage Topology and Parametric Active Sculpting

Noise-Reduced Component Optimization and Dynamic Headroom

The Seymour Duncan 805 Overdrive uses the iconic, mid-focused TS808 tube-screamer circuit structure as its sonic baseline, completely overhauling the backend architecture to meet professional performance demands. By swapping modern industry-standard components for a specialized MC33178 operational amplifier microchip, this purely analog design achieves drastically lowered system background noise and extended battery operational life. The circuit expands on vintage gain limitations by unlocking a massive sweep starting from a subtle 8dB clean level lift and running all the way up to 36dB of rich, saturated clipping. This delivery provides a natural, tube-like texture that responds fluidly to instrument volume attenuation.

Active Three-Band Equalization and Core Frequency Restoration

Overcoming the thin, single-knob low-pass filters that compromise traditional overdrive pedals, this utility box introduces a premium three-band active equalization network. Operating on highly musical, curated frequency shelves, the individual Bass, Mid, and Treble controls provide up to 11dB or 12dB of true active boost or cut from their detented noon baselines. The Bass channel is fixed at 90Hz to seamlessly inject low-end cabinet chunk back into single-coil configurations. The Mid control focuses squarely at 750Hz to tame or accentuate heavy core vocal frequencies, while the Treble band sits at 2.1kHz to manage high-end jangle and biting note separation.

Creative Rig Integration and Circuit Optimization

High-Definition Modern Metal Tightening

Setting the internal Drive control fully counterclockwise while maxing out the Level pot configures the hardware as an authoritative signal conditioner right before a high-gain multi-channel tube amplifier. Dropping the Bass control slightly while bumping the Treble control up into a 3 o'clock parameter tightens up loose low-end tracking on drop-tuned electric guitars or low-interval strings, ensuring fast rhythmic patterns stay focused, punchy, and free of low-frequency mud.

Transparent Amp-Like Blues and Crunch Contouring

Positioning the Drive control around noon and setting the active Mid knob back to a 10 o'clock scoop opens up an organic, transparent blues crunch landscape. In this configuration, the asymmetrical clipping diodes react directly to pick attack and hand dynamics, letting soft fingerpicking passages drop down into sparkling clean tones while aggressive strumming segments break naturally into fat, compressed vintage overdrive.

THIS PEDAL CAN BE POWERED BY A SINGLE 9V BATTERY OR AN EXTERNAL 9V TO 18V REGULATED DC ADAPTER WITH A CENTER NEGATIVE POLARITY CONFIGURATION. CURRENT CONSUMPTION MEASURES 4.5mA. DO NOT EXCEED 18V DC OR USE UNREGULATED POWER SOURCES, AS PERMANENT COMPONENT DAMAGE MAY OCCUR AND YOUR WARRANTY WILL BE VOIDED. SEYMOUR DUNCAN OFFERS THE ORIGINAL PURCHASER A ONE-YEAR LIMITED WARRANTY ON BOTH LABOR AND MATERIALS FROM THE DAY OF PURCHASE.