The Electro-Harmonix Q-Tron Plus is an Electro-Harmonix envelope filter pedal, currently around $168.55. Close alternatives include the Emma DiscomBOBulator and the Electro-Harmonix Riddle Q Balls. It pairs well with the Mesa Boogie Mark IIC+ Combo and the Friedman BE-Mini Head.
Electro-Harmonix Q-Tron Plus
Electro-Harmonix · pedal
The Electro-Harmonix Q-Tron Plus is an envelope-following filter pedal delivering dynamic, funky tones responsive to pick dynamics and guitar volume. Its three-band EQ and mix control provide extensive tonal shaping from subtle color to dramatic expression effects. The Q-Tron Plus remains popular for creating responsive, expressive sounds in funk, rock, and experimental contexts.
- filter
- dynamic
- responsive
- envelope
- mix
- expressive
- boost
- synth
Price updated Aug 27, 2026
Genres the Electro-Harmonix Q-Tron Plus is commonly used in
- Funk
- Experimental
- Rock
- Soul
cited
Inferred from shared tonal signals, not a stated genre tag. - Reggae
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Electro-Harmonix Q-Tron Plus
Mesa Boogie Mark IIC+ Combo
Mesa Boogie
27% matchThe Mark IIC+'s singing, high-gain lead voice gives the Q-Tron's dynamic envelope-filter sweep a saturated amp platform.
Friedman BE-Mini Head
Friedman
tonal matchFriedman BE-Mini Head stacks more saturation onto a low-gain tone
Hughes & Kettner Warp 7
Hughes & Kettner
tonal matchHughes & Kettner Warp 7 stacks more saturation onto a low-gain tone
Synergy SL2 Module
Synergy
tonal matchSynergy SL2 Module stacks more saturation onto a low-gain tone
Hiwatt Hi-Gain 100W Head
Hiwatt
tonal matchHiwatt Hi-Gain 100W Head stacks more saturation onto a low-gain tone
Hughes & Kettner Coreblade
Hughes & Kettner
tonal matchHughes & Kettner Coreblade stacks more saturation onto a low-gain tone
Friedman Phil X Signature
Friedman
tonal matchFriedman Phil X Signature stacks more saturation onto a low-gain tone
EVH 000
Evh
tonal matchEVH 000 stacks more saturation onto a low-gain tone
Pedals that stack with the Electro-Harmonix Q-Tron Plus
Fjord Fuzz Odin
Fjord Fuzz
32% matchThe Q-Tron's dynamic envelope-filter sweep colors the signal feeding the Odin's heavy doom fuzz stage.
ThorpyFX The Dane
ThorpyFX
31% matchPush the Q-Tron's filter with the Dane's dynamic, harmonically complex drive first, so the quack tracks a hotter signal instead of a bare guitar line.
Dawner Prince Boonar
Dawner Prince
19% matchThe Q-Tron's dynamic envelope-filter sweep colors the signal before the Boonar's Echorec-style repeats echo it. — goes in the amp's FX loop (or last, into a clean amp)
Electro-Harmonix XO Deluxe Memory Man
Electro-Harmonix
13% matchKeep the Memory Man's echoes after the Q-Tron's envelope sweep, so the filter tracks a dry signal instead of chasing repeats. — goes in the amp's FX loop (or last, into a clean amp)
Cusack Music Carolina Reaper Overdrive Fuzz
Cusack Music
tonal matchCusack Music Carolina Reaper Overdrive Fuzz stacks more saturation onto a low-gain tone
Dr. Scientist Frazz Dazzler V2
Dr Scientist
tonal matchDr. Scientist Frazz Dazzler V2 layers fuzz over a low-gain tone
Crowther Prunes
Crowther
tonal matchCrowther Prunes layers fuzz over a low-gain tone
EarthQuaker Devices Dirt Transmitter
EarthQuaker Devices
tonal matchThe Q-Tron's dynamic envelope-filter sweep colors the signal feeding the Dirt Transmitter's stacking-friendly gain stage.
Cheaper alternatives
Electro-Harmonix XO Micro Q-Tron
Electro-Harmonix
73% similarityShared character: peak, effect, natural_resonance
Electro-Harmonix Nano Q-Tron
Electro-Harmonix
72% similarityShared character: peak, effect, mono_synth
Electro-Harmonix Micro Q-Tron Envelope Filter
Electro-Harmonix
72% similarity“A smaller, more pedalboard-friendly version of the Q-Tron, suited for funk, soul, R&B, and expressive rock or bass playing”
Carl Martin Ottawa
Carl Martin
71% similarityShared character: mono_synth, wah, natural_resonance
Behringer Meatball Restyled
Behringer
70% similarityShared character: fx_loop, wah, filter
Behringer B-Tron III Envelope Filter
Behringer
70% similarity“budget construction means sensitivity response and tracking quality may not match premium envelope filters like the Mu-Tron III or EHX Q-Tron”
Boutique & premium upgrades
Ashdown Type 23 Three Band Filter
Ashdown
96% similaritysimilar tone character
Maxon AF-9 Auto Filter
Maxon
95% similaritysimilar tone character
Death By Audio Deep Animation
Death By Audio
95% similaritysimilar tone character
Xotic Robotalk 1 New Old Stock
Xotic
95% similaritysimilar tone character
Similar charactersee all similar tone character →
Emma DiscomBOBulator
pedal
72% similarityShared character: mono_synth, wah, filter
Electro-Harmonix Riddle Q Balls
Electro-Harmonix
71% similarityShared character: peak, natural_resonance, filter
Keeley Neutrino V2
Keeley
71% similarityShared character: peak, wah, natural_resonance
Aitone AT-08
Aitone
71% similarity“reviewers compare its sweep character to the Electro-Harmonix QTron, suggesting it achieves comparable tonal results at a lower price point”
Ashdown Funk Faze
Ashdown
70% similarityShared character: wah, filter, boost
Tycobrahe Parapedal Wah
Tycobrahe
70% similarityShared character: peak, mono_synth, wah
See all alternatives to the Electro-Harmonix Q-Tron Plus (cheaper + boutique) →
Questions people ask
What are good alternatives to the Electro-Harmonix Q-Tron Plus?+
The closest matches in character are the Emma DiscomBOBulator, the Electro-Harmonix Riddle Q Balls, the Keeley Neutrino V2. Budget picks: Electro-Harmonix XO Micro Q-Tron, Electro-Harmonix Nano Q-Tron, Electro-Harmonix Micro Q-Tron Envelope Filter. Boutique upgrades: Ashdown Type 23 Three Band Filter, Maxon AF-9 Auto Filter, Death By Audio Deep Animation.
What pairs well with the Electro-Harmonix Q-Tron Plus?+
Strong matches from rig and tone-complementarity evidence: Mesa Boogie Mark IIC+ Combo, Friedman BE-Mini Head, Hughes & Kettner Warp 7 — The Mark IIC+'s singing, high-gain lead voice gives the Q-Tron's dynamic envelope-filter sweep a saturated amp platform..
How much does the Electro-Harmonix Q-Tron Plus cost?+
Around $168.55 (live listing price, updated Aug 27, 2026).