The Electro-Harmonix Micro Q-Tron Envelope Filter is an Electro-Harmonix wah pedal, currently around $77.19. Close alternatives include the Emma DiscomBOBulator and the FTelettronica Envelope Filter. It pairs well with the Bad Cat Cub and the Cornell Romany 10 Tweed 10 watt Tube.
Electro-Harmonix Micro Q-Tron Envelope Filter
Electro-Harmonix · pedal
The Electro-Harmonix Micro Q-Tron is a miniaturized envelope filter pedal delivering auto-wah and funky filter effects triggered by picking attack. Features Q, Volume, and Mode controls with three filter mode selections: Band-Pass Filter (BPF), Low-Pass Filter (LPF), and High-Pass Filter (HPF). The Q control adjusts the resonance and sensitivity of the filter sweep. A smaller, more pedalboard-friendly version of the Q-Tron, suited for funk, soul, R&B, and expressive rock or bass playing.
What stands out
“the electro-harmonix micro q-tron is a miniaturized envelope filter pedal delivering auto-wah and funky filter effects triggered by picking attack”
— from the listing
“In the signal chain it benefits from placement before drive pedals for the most responsive envelope tracking”
— from the community notes
“Its standout strength is the three filter modes giving meaningfully different tonal characters from one small enclosure”
— from the community notes
“Strengths: Three filter modes (BPF, LPF, HPF) provide meaningfully different envelope filter characters from classic wah to synth-style resonance”
— from the reviews
“A smaller, more pedalboard-friendly version of the Q-Tron, suited for funk, soul, R&B, and expressive rock or bass playing”
— from the listing
Trade-offs
“the micro q-tron produces classic touch-sensitive envelope filter sweeps ranging from subtle wah-like filtering to extreme resonant quacking”
— from the community notes
- filter
- envelope filter
- envelope
- resonance
- expressive
- wah
- dynamic
- touch
Price updated Oct 23, 2026
Genres the Electro-Harmonix Micro Q-Tron Envelope Filter is commonly used in
Amps that pair well with the Electro-Harmonix Micro Q-Tron Envelope Filter
Bad Cat Cub
Bad Cat
22% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
Bad Cat Cub's own harmonically rich character is the real reason this is worth trying
Comes later in the signal chain
Cornell Romany 10 Tweed 10 watt Tube
Cornell
20% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
Cornell Romany 10 Tweed 10 watt Tube leans this dynamic tone toward compressed, which it doesn't make on its own
Comes later in the signal chain
Ceriatone British Style 2525
Ceriatone
tonal matchComes later in the signal chain
Into a dynamic tone, Ceriatone British Style 2525 brings a pull toward compressed that's missing
Vox AC30S1 OneTwelve 30W 1x12 Combo
Vox
tonal matchComes later in the signal chain
Into a dynamic tone, Vox AC30S1 OneTwelve 30W 1x12 Combo brings a pull toward compressed that's missing
Fryette Power Station 100
Fryette
tonal matchComes later in the signal chain
Fryette Power Station 100 leans this dynamic tone toward compressed, which it doesn't make on its own
Kustom HV30 Tube
Kustom
tonal matchComes later in the signal chain
Kustom HV30 Tube leans this dynamic tone toward compressed, which it doesn't make on its own
Mesa/Boogie Stiletto Deuce Stage II
Mesa Boogie
tonal matchComes later in the signal chain
Mesa/Boogie Stiletto Deuce Stage II leans this dynamic tone toward compressed, which it doesn't make on its own
Friedman PT-20
Friedman
tonal matchComes later in the signal chain
Friedman PT-20 leans this dynamic tone toward compressed, which it doesn't make on its own
Pedals that stack with the Electro-Harmonix Micro Q-Tron Envelope Filter
Origin Effects RevivalDrive
Origin Effects
21% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
Into a dynamic tone, Origin Effects RevivalDrive brings a pull toward compressed that's missing
Comes later in the signal chain
Dunlop MXR Distortion Plus
Dunlop
20% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
Dunlop MXR Distortion Plus leans this dynamic tone toward compressed, which it doesn't make on its own
Comes later in the signal chain
JHS Lucky Cat Delay limited edition
JHS Pedals
10% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Run JHS Lucky Cat Delay limited edition after Electro-Harmonix Micro Q-Tron Envelope Filter in the signal chain, where it won't crowd Electro-Harmonix Micro Q-Tron Envelope Filter — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Meris LVX Delay
Meris
5% matchKeep Electro-Harmonix Micro Q-Tron Envelope Filter's dynamic voice out front: Meris LVX Delay goes after Electro-Harmonix Micro Q-Tron Envelope Filter in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
DigiTech DOD Compressor 280
Digitech
tonal matchComes later in the signal chain
DigiTech DOD Compressor 280 leans this dynamic tone toward compressed, which it doesn't make on its own
DigiTech XBS Bass Squeeze
Digitech
tonal matchComes later in the signal chain
DigiTech XBS Bass Squeeze leans this dynamic tone toward compressed, which it doesn't make on its own
Fairfield Circuitry 20% More
Fairfield Circuitry
tonal matchComes later in the signal chain
Fairfield Circuitry 20% More leans this dynamic tone toward compressed, which it doesn't make on its own
Tech 21 CompTortion
Tech 21
tonal matchComes later in the signal chain
Into a dynamic tone, Tech 21 CompTortion brings a pull toward compressed that's missing
Cheaper alternatives
Demon FX Pearl White Auto Wah
Demon Fx
55% similarityShared character: sensitivity, tight tracking, wah
The Next Sound CH-05 Auto Wah
The Next Sound
53% similarityShared character: resonant, tight tracking, wah
Maestro Agena
Maestro
96% similaritysimilar tone character
Donner Dynamic wah
Donner
96% similaritysimilar tone character
Boutique & premium upgrades
Carl Martin Ottawa
Carl Martin
73% similarityShared character: soul, mono synth, sensitivity
Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter
Carl Martin
69% similarityShared character: soul, sensitivity, resonant
Electro-Harmonix Q-Tron Plus
Electro-Harmonix
64% similarity“A smaller, more pedalboard-friendly version of the Q-Tron, suited for funk, soul, R&B, and expressive rock or bass playing”
Maxon AF-9 Auto Filter
Maxon
59% similarityShared character: soul, sensitivity, natural resonance
Death By Audio Deep Animation
Death By Audio
57% similarityShared character: sensitivity, tight tracking, filter
Electro-Harmonix Riddle Q Balls
Electro-Harmonix
57% similarityShared character: soul, sensitivity, natural resonance
Similar charactersee all similar tone character →
Emma DiscomBOBulator
pedal
62% similarityShared character: soul, mono synth, sensitivity
FTelettronica Envelope Filter
Ftelettronica
57% similarityShared character: soul, sensitivity, natural resonance
Behringer B-Tron III Envelope Filter
Behringer
57% similarityShared character: sensitivity, tight tracking, wah
Keeley Nova Wah
Keeley
57% similarityShared character: sensitivity, wah, filter
Electro-Harmonix Nano Q-Tron
Electro-Harmonix
56% similarityShared character: mono synth, sensitivity, tight tracking
Guyatone Wah Rocker WR3
pedal
55% similarityShared character: mono synth, sensitivity, wah
See all alternatives to the Electro-Harmonix Micro Q-Tron Envelope Filter (cheaper + boutique) →
Questions people ask
What are good alternatives to the Electro-Harmonix Micro Q-Tron Envelope Filter?+
The closest matches in character are the Emma DiscomBOBulator, the FTelettronica Envelope Filter, the Behringer B-Tron III Envelope Filter. Budget picks: Demon FX Pearl White Auto Wah, The Next Sound CH-05 Auto Wah, Maestro Agena. Boutique upgrades: Carl Martin Ottawa, Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter, Electro-Harmonix Q-Tron Plus.
What pairs well with the Electro-Harmonix Micro Q-Tron Envelope Filter?+
Strong matches from rig and tone-complementarity evidence: Bad Cat Cub, Cornell Romany 10 Tweed 10 watt Tube, Ceriatone British Style 2525 — Bad Cat Cub's own harmonically rich character is the real reason this is worth trying.
How much does the Electro-Harmonix Micro Q-Tron Envelope Filter cost?+
Around $77.19 (live listing price, updated Oct 23, 2026).
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