The Keeley Red Dirt Overdrive is an overdrive pedal from Keeley Electronics, released in March 2013 with a street price of $1991. It grew directly out of founder and head engineer Robert Keeley's long-running work modifying Ibanez Tube Screamers: the pedal combines the sounds of his original "Mod Plus" and "Baked" modified pedals with refinements from his custom pedal line, plus a FET input stage21. Keeley describes it as delivering a range of tones from classic subtle blues to contemporary high-gain crunch1.
MusicRadar's reviewers placed it squarely in the Tube Screamer tradition, calling it "a fully formed graduate of Tube Screamer school"3.
A Tube Screamer built from Keeley's Mod Plus and Baked mods
Robert Keeley built his reputation modifying other companies' pedals, and the Tube Screamer was central to that work. In a Premier Guitar interview he explained that his Blues Driver and Tube Screamer mods eventually became the Keeley Super Phat Mod and the Red Dirt4. On That Pedal Show, he recalled that the Blues Driver mod came first, at customers' requests, after he had done a Tube Screamer mod5. MusicRadar's Trevor Curwen notes that Robert Keeley is well known for his modification of Tube Screamer circuits, and that the Red Dirt is regarded as the culmination of that quest among Keeley's own pedals6.
The Red Dirt packages that modding experience into a pedal of Keeley's own. The maker's announcement states that all the work from the already popular Mod Plus and Baked mods is present, along with a FET input stage that makes the overdrive break up in what Keeley calls a genuinely "tube like" style2. Premier Guitar's launch announcement described the pedal as the result of over 10 years of research and fine tuning development of the existing modified pedal lineup1.
The two internal modes map directly onto those mods. MusicRadar's review explains that the Red Dirt's two modes, 'lo' and 'hi', give access to Keeley's 'plus' and 'baked' mods, popular modifications to TS-808s3:
| Mode | Corresponds to | What it does |
|---|---|---|
| lo | Keeley's 'plus' mod | Beefs up the low end |
| hi | Keeley's 'baked' mod | Gives more range in gain |
In the Tone Workstation review, Curwen described what each mode sounds like in practice: Mod+ mode gives the sound of a well-sorted TS808 with the pushed mid range, but with extra clarity and good response to player dynamics, while Baked mode ups the gain for more of a cranked amp distortion6.
"The Red Dirt certainly ticks the boxes as a fully formed graduate of Tube Screamer school."
A peek inside reveals an RC4558P op-amp, the chip early TS-808s were noted for using, which reinforces the lineage3.
The controls
The Red Dirt carries three knobs and a mode selection. According to the launch press announcements17:
| Control | What it does |
|---|---|
| Dirt | An extremely dynamic, touch-sensitive gain at both mild and heavier sustain settings |
| Tone | An extended range of useable voicing to match virtually any guitar and amp combination |
| Volume | Balances the signal, or pushes an amp into further sustain and overdrive with authority |
MusicRadar's review found the tone knob shapes the sound from soft and thumpy with the knob down to aggressive and cutting with it up3. The lo and hi modes sit alongside these controls, switching between the plus and baked circuits3.
Build, bypass and origin
Keeley described the Red Dirt as 100 percent hand made in the USA, with the trademark Keeley blue LED, true bypass switching, and what the maker calls one of the best warranties currently available2. Press announcements from Premier Guitar, Vintage Guitar and Guitar Interactive Magazine all describe it as hand-built in the USA using the finest components and construction techniques, beautifully housed and powder coated in a rugged enclosure187.
MusicRadar's reviewers noted the quality of the components and build, calling it pro-grade stuff with a high degree of human involvement3. Their overall verdict:
"Exceptional quality and tone from one of the most respected names in the pedal business."
Their reasons to buy were the pro-grade components and build and the striking string articulation; on reasons to avoid, they wrote simply, "Not much."3
One piece of backstory comes from Robert Keeley himself. In the Premier Guitar interview he was candid about the circumstances around this era of product releases54:
"But when you get in trouble with the IRS and have to pay $13,000 a month in alimony, you'll do a lot for money, including..."
The Red Dirt and the Red Dirt Mini
The Red Dirt later appeared in a smaller format as the Keeley Red Dirt Mini. MusicRadar's Trevor Curwen describes the Mini as a TS-style overdrive based on Robert Keeley's Tube Screamer mods, consolidated in the Red Dirt, now available in mini-pedal format. His verdict: "It's a classy take on a TS-style overdrive with practical added options."9
The Mini gives players the same circuit family in a board-friendly enclosure, while the original full-size Red Dirt remains the version with the hand-built USA construction and the three-knob, two-mode layout described above981.
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Questions
Is the Keeley Red Dirt true bypass?
Yes. Keeley's own announcement lists true bypass switching among the pedal's features, and press coverage from Premier Guitar, Vintage Guitar and Guitar Interactive Magazine all describe it as true bypass, for pure tone and no signal loss when the pedal is off.
What op-amp is in the Keeley Red Dirt?
MusicRadar's review reports an RC4558P op-amp inside, the same type early Ibanez TS-808 Tube Screamers were noted for using. That chip is part of why the pedal sits squarely in the Tube Screamer tradition rather than straying from it.
What is the difference between the Keeley Red Dirt and the Red Dirt Mini?
The Red Dirt Mini puts the same TS-style overdrive circuit, based on Robert Keeley's Tube Screamer mods, into a mini-pedal format. MusicRadar's reviewer called it a classy take on a TS-style overdrive with practical added options, in a smaller enclosure than the original.
Is the Keeley Red Dirt made in the USA?
Yes. Keeley described the Red Dirt as 100 percent hand made in the USA, and press announcements from Premier Guitar, Vintage Guitar and Guitar Interactive Magazine all describe it as hand-built in the USA using the finest components and construction techniques.
How much did the Keeley Red Dirt cost at launch?
It launched in March 2013 with a street price of $199. Keeley's own announcement also cited a price of $199, positioning it as a great value for a hand-built American overdrive pedal.
Sources (9)
- Keeley Electronics Introduces Red Dirt Overdrive, Premier Guitar, 2013-03-05
- NEW Red Dirt Overdrive Gets a 21st Century Fan!!, Keeley Electronics Guitar Effects Pedals, 2013-03-06
- Keeley Red Dirt Overdrive review, MusicRadar, 2014-08-04
- Keeley Electronics’ Robert Keeley’s guitar pedals, Premier Guitar (www.premierguitar.com), 2025-08-07
- That Pedal Show, That Pedal Show (YouTube), 2017-10-19
- Keeley Tone Workstation review, MusicRadar, 2017-01-18
- Keeley Electronics Introduces Red Dirt Overdrive, Guitar Interactive Magazine, 2013-03-12
- Keeley Intros Red Dirt OD, Vintage Guitar magazine, 2013-03-07
- Keeley Red Dirt Mini review, MusicRadar, 2015-07-08
