Fengzai Pedals | TUBE DRIVER Tube Overdrive (Classic 4-Knob Lineage | Internal Mode Switch)
Voiced after the B.K. Butler / Chandler “Tube Driver” 4-knob family, this hand-built unit uses the iconic Level / Hi / Low / Drive control layout—focused on amp-pushing feel, usable EQ, and a tube-driven lead character. The 4-knob format is widely described as the definitive Tube Driver era, commonly cited as designed in 1983 and produced from 1985 onward.

Lineage (Objective)

  • Tube Driver is commonly described as one of the early tube overdrives reaching the market in the late 1970s.
  • The “iconic” 4-knob version is often referenced as designed in 1983 and produced starting 1985.

Notable Use Context (Citable)

Often associated with players such as David Gilmour, Eric Johnson, Billy Gibbons, and Joe Satriani in multiple gear references.

Controls

  • LEVEL: master output / amp-push level
  • HI: high-band EQ (bite, presence, cut)
  • LOW: low-band EQ (body, support, tightness)
  • DRIVE: gain, compression, sustain

Internal Mode Switch (Under the Back Cover)

An internal mode switch lets you change the core response/gain feel without adding extra front-panel clutter—set it once, keep it stable on stage. (Exact mode behavior depends on your unit’s factory voicing.)

Power & What’s Included (Read Carefully)

  • Tube and power adapter are not included.
  • This platform is commonly AC-powered (around 12.6VAC in many references)—very different from most 9V DC pedals. Use the correct 12V AC supply as specified for your unit.

Build

  • Hand-soldered assembly for reliability and serviceability.

We shipped everywhere.

Because these are handmade, we don’t accept returns or exchanges unless there’s a quality issue.

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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • tube drive
Categories
Year
  • 2026

Product safety information may be available here.

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