Pricing and availability

Average Price: $299

High-end/Boutique

$70

$251+

Price Tier

Budget

Standard

High-end

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Description

The Electro-Harmonix Q-Tron is your ticket to funky, filter-infused soundscapes. Offering high pass, band pass, and low pass filters, this dynamic pedal allows you to dial in sweep directions, tweak resonance, and even add a groove-inducing auto-wah effect. Whether you play bass or guitar, the Q-Tron's comprehensive controls let you sculpt everything from delicate filter modulations to bold, synth-like sweeps. With its touch-responsive technology, this versatile filter pedal invites you to explore new sonic territories, effortlessly bridging the gap between traditional stringed instrument tones and synth-style effects.

Key Features:

  • High pass, band pass, and low pass filters
  • Dial-in sweep directions
  • Adjustable resonance
  • Auto-wah effect
  • Touch-responsive technology
  • Suitable for both bass and guitar
  • Wide-ranging controls for sound sculpting
  • Creates both subtle modulations and synthesizer-like sweeps

Product specs

Brand Electro-Harmonix
Model Q-Tron Envelope Filter
Finish Silver / Black / Teal
Year 2000s
Categories Filter and Wah Pedals

FAQs

What type of effect does the Electro-Harmonix Q-Tron produce?

The Electro-Harmonix Q-Tron is an envelope filter pedal, which creates dynamic filter effects that respond to the playing intensity, producing funky, auto-wah-like sounds.

Is the Electro-Harmonix Q-Tron suitable for bass guitar?

Yes, the Electro-Harmonix Q-Tron works well with bass guitars, providing rich and expressive filter effects that enhance the instrument's natural tones.

What power supply does the Electro-Harmonix Q-Tron require?

The Electro-Harmonix Q-Tron can be powered by a 9V battery or an optional 9.6VDC-200mA power adapter, which is not included with the pedal.

How does the Electro-Harmonix Q-Tron differ from the Q-Tron+?

The Q-Tron+ includes additional features like an effects loop and a switchable boost, offering more versatility compared to the standard Q-Tron model.

Can the Electro-Harmonix Q-Tron be used with other effects pedals?

Yes, the Electro-Harmonix Q-Tron can be combined with other effects pedals, allowing for a wide range of creative sound possibilities in your pedalboard setup.

The Gear Files

The Gear Files

Electro Harmonix Q Tron Demo/Playthrough

Video thumbnail for Electro Harmonix Q Tron Demo/Playthrough by The Gear Files

Electro Harmonix Q Tron Demo/Playthrough

The Gear Files

The Gear Files

Video thumbnail for Electro-Harmonix Q-Tron Envelope Filter pedal demo by Sam Brawn Music

Electro-Harmonix Q-Tron Envelope Filter pedal demo

Sam Brawn Music

Sam Brawn Music

Video thumbnail for Electro Harmonix Q-Tron Envelope Filter by Pedal Sessions

Electro Harmonix Q-Tron Envelope Filter

Pedal Sessions

Pedal Sessions

Reviews

PROS

  • Excellent low pass filter capabilities

  • Replicates original Mu-Tron circuitry closely

  • Wide variety of funk and 'wah' sounds possible

  • Allows for significant tonal expression based on playing dynamics

  • Offers multiple modulation types and range settings

  • Can be used effectively with both clean and distorted signals

  • Favored by notable musicians like Flea from RHCP

CONS

  • Steep learning curve to achieve desired sound

  • Requires 24V power supply, not standard

  • No LED status indicator for pedal engagement

  • Sound quality highly dependent on amp used

  • May require additional compressor or limiter to manage volume spikes

Add

4.5 out of 5

Based on 2 Reviews and 17 Ratings

5 star
4 star
3 star
2 star
1 star
jonsy

Not bad but not comfy too

Powerful thing, precise sound tuning (but the bad thing is it very depends on amp you use so u have to tune it every time you change amp), nice classic Bootsy-like sound, and the worst thing for me it's 24V.

luis_carballo_caycedo

Super funky

One of the best machines for funk. It's a little big and needs his own adaptor (24v). You'll need a comp or limiter to tame the volume spikes.

Artist usage

Add artist
See how Dan Auerbach uses Electro-Harmonix Q-Tron

Dan Auerbach

Guitarist, Keyboardist

The Black Keys

...
Verified via YouTube

Dan's Q-Tron can be seen at 10:29 into this video.

See how Trent Reznor uses Electro-Harmonix Q-Tron

Trent Reznor

Keyboardist, Singer

Nine Inch Nails

...
Verified via nin.wiki

Trent Reznor uses the Electro-Harmonix Q-Tron pedal, as evidenced by its inclusion in the partial list of equipment used to record "The Fragile," as detailed in the Fragility Tour program. This information is sourced from nin.wiki.

See how Davie504 uses Electro-Harmonix Q-Tron

Davie504

Bassist

...
Verified via YouTube

At 1:41, EHX Q-Tron pedal is shown.

See how Kenny Beats uses Electro-Harmonix Q-Tron

Kenny Beats

Music Producer

...
Verified via YouTube

In the attached video, starting around 2:57, Kenny shares his EHX Q-Tron pedal, which he uses on bass often

See how Davide Biale uses Electro-Harmonix Q-Tron

Davide Biale

Guitarist, Bassist

...
Verified via YouTube

At 1:41 minute mark, Biale showed his EHX Q-Tron pedal.

See how Justin Lockey uses Electro-Harmonix Q-Tron

Justin Lockey

Guitarist, Keyboardist

Editors

...
Verified via Photo

Used on the ''In Dream'' recording sessions. You can see the box next to the Justin's pedalboard.

See how John Martyn uses Electro-Harmonix Q-Tron

John Martyn

Singer, Guitarist

...
Verified via The Official John Martyn Website

The sequence was; Elec guitar (Les Paul or SG) into Electro Harmonics Qtron +, Qtron+ to ProCo RAT, RAT to BOSS DDI, DDI to Ernie Ball Volume Pedal, EB to second DDI, DDI to DI Box and then to JC120 amp.

See how Stefan Lessard uses Electro-Harmonix Q-Tron

Stefan Lessard

Bassist

Dave Matthews Band

...
Verified via Dave Matthews Band
See how DJ Harrison uses Electro-Harmonix Q-Tron

DJ Harrison

DJ

Butcher Brown

...
Verified via Photo

DJ Harrison is pictured with two Electro-Harmonix Q-Tron pedals, as shared on his Instagram account.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Electro-Harmonix Q-Tron, it is most commonly used with the following gear.

Community setups

Show yours
davidlachlanlewis

davidlachlanlewis

Gear IQ 430

5 alternative and related items for Electro-Harmonix Q-Tron, curated by the Equipboard community.

Electro-Harmonix Nano Q-Tron

$93.00 - $111.70

similar sound cheaper alternative

The newest, smallest version of the EHX Q-Tron, with four controls.

Electro-Harmonix Original Q-Tron

$225.00

Vintage or Discontinued similar sound

The original 'big box' version, designed with input from Mu-Tron's Mike Beigel.

Electro-Harmonix Q-Tron Plus

$164.00 - $192.30

high-end alternative similar sound mod

A more commonly utilized, modded version of the Q-Tron XO, with an added effects loop among other features.

Electro-Harmonix Micro Q-Tron

$77.00 - $112.50

cheaper alternative similar sound

A more compact, simplified version of the 'XO' Q-Tron.

Electro-Harmonix Enigma

$224.30

Vintage or Discontinued similar sound mod

A bass focused, combination of the Q-Tron and an analog distortion circuit. Now discontinued.

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