The Greuter Fuller Drive is a low-to-mid-gain overdrive pedal from Swiss maker Greuter Audio, first presented on May 12, 2017 from Zürich1. It is built around a discrete JFET circuit, a transistor type that Greuter says makes the pedal behave like a good tube amp, with high dynamic range, lots of headroom, a lively character, and natural compression1. For a player, that means an overdrive that sits at the edge of breakup and responds to how hard you play rather than smearing everything into one fixed amount of grit.
Guitar Pedal X describes the pedal as known for "high headroom, edge of breakup texture, and great dynamics"2. The Fuller Drive with Boost version pairs that overdrive with what RockBoard's PedalPedia calls "a super dynamic overdrive in combination with a high headroom clean Boost"3.
The controls and the gain switch
The original Fuller Drive carried four knobs and two toggle switches2. The tone control sweeps from warm and smooth on one end to bright and sparkly on the other1. The upper toggle switch moves the pedal from low gain to top boost, a setting that boosts higher frequencies and adds more gain1.
The 10 Year Anniversary editions each add controls on top of the original four-knob layout2:
| Edition | Drive side | Added side |
|---|---|---|
| 10 BOOST | Drive, Volume, Tone, Drive footswitch | Boost, Range, Boost footswitch2 |
| 10 WAH! | Drive, Volume, Tone, Drive footswitch | Wah, Q2 |
The 10 BOOST adds Boost and Range controls over the previous four-knob Fuller Drive, while the 10 WAH! adds Wah and Q controls2. The 10 WAH! is a Fuller Drive overdrive with an inductorless wah, meaning its wah section uses an electronic circuit rather than the traditional inductor found in classic wah pedals2.
How it responds to your playing
Premier Guitar's 2017 product page calls the pedal "a very expressive, low-to-mid-gain overdrive pedal" and notes that it is "extremely sensitive to your pick attack and to your guitar volume"1. In practice that means rolling back your guitar's volume knob cleans up the drive, and backing off your pick attack lets the tone settle toward clean, the way a responsive tube amp does.
"It's extremely sensitive to your pick attack and to your guitar volume."
The Fuller Drive's overdrive character comes from its discrete JFET circuit design, which Greuter says acts like a good tube amp and offers a high dynamic range with lots of headroom1. Its single tone control adjusts the sound from warm and smooth on one end to bright and sparkly on the other1.
History and the anniversary editions
The Fuller Drive is designer Sacha Greuter's very first original design, and the "Fuller" name was inspired by American architect, scientist, and inventor Buckminster Fuller2. The very first edition was released 10 years before September 2025, which places the original launch around 20152.
For Greuter Audio's 10 Year Anniversary, Sacha announced three Anniversary Editions of the Fuller Drive, the 10 BOOST and the 10 WAH!, for the Mannheim Guitar Summit2. Both were priced at 350 EUR and available for pre-order at the time of the announcement2.
The 10 BOOST and 10 WAH! editions were not yet listed on the Greuter Audio website as of the September 2025 announcement, with pre-orders being taken by email2.
Power, bypass, and price
The pedal uses true bypass switching, so your signal passes through untouched when the pedal is off1. It runs on a standard 9V DC center-negative power supply, which is not included with the pedal13. The Fuller Drive with Boost draws 13.5mA, low enough that it shares easily with other pedals on a typical 9V power brick3.
On price, the original Fuller Drive was listed at 290 in dollars, euros, and Swiss francs when announced in May 20171. The Anniversary editions were announced at 350 EUR each in September 20252. The original pedal was available in various colors1.
Videos
GREUTER Audio
GREUTER Audio
GREUTER Audio
Questions
Is the Greuter Fuller Drive true bypass?
Yes. The original Fuller Drive, as presented by Greuter Audio in May 2017, uses true bypass switching, so the pedal's circuit is fully out of the signal path when it is disengaged.
What power supply does the Fuller Drive need?
It runs on a standard 9V DC center-negative power supply. The Fuller Drive with Boost draws 13.5mA, so it is easy to run from a typical pedalboard power brick or a daisy chain with other 9V center-negative pedals.
Does the Fuller Drive come with a power adapter?
No. Greuter Audio states that the pedal works with standard 9V center-negative adapters and that the adapter is not included, so you need to supply your own power.
How much does the Greuter Fuller Drive cost?
The original Fuller Drive was priced at 290 in dollars, euros, and Swiss francs when announced in May 2017. The 10 Year Anniversary editions announced in September 2025 were listed at 350 EUR each.
Does the Fuller Drive clean up with the guitar volume knob?
Yes. Premier Guitar's product page describes it as extremely sensitive to pick attack and to guitar volume, so rolling back the volume knob cleans up the overdrive the way a tube amp would.
What colors does the Fuller Drive come in?
The original Fuller Drive was available in various colors, as listed on Premier Guitar's 2017 product page. The specific finishes offered on the Anniversary editions were not detailed in the announcement.
Sources (3)
- Greuter Audio Presents the Fuller Drive, Premier Guitar, 2017-05-12
- Guitar Pedal X, Guitar Pedal X, 2025-09-26
- Fuller Drive with Boost by Greuter Audio, RockBoard PedalPedia, 2026
