Dumble ODS Preamp - Overdrive preset

Close · 62/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

Howard Dumble's Overdrive Special (ODS) is arguably the most legendary and sought-after amplifier ever made, hand-built in extremely small quantities for select elite clients. The ODS delivers an unmatched combination of warm, complex clean tones and a singing, harmonically rich overdrive channel that responds with extraordinary nuance to playing dynamics. Stevie Ray Vaughan, Robben Ford, Carlos Santana, and Eric Clapton are among the handful of players privileged to own original Dumbles.

• Years produced: 1970s–present
• Made in: USA
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 4× 6L6

Known for: Stevie Ray Vaughan, Robben Ford, Carlos Santana, Eric Clapton, Doyle Bramhall II.

Heard on: Couldn't Stand the Weather — Stevie Ray Vaughan (1984); Rugged Road — Robben Ford (1988).

Tags: american, clean, crunch, modern.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.