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Electro Harmonix MICRO QTRON

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Online : sent within 7 days
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Shipping: Shipping cost calculated on next step
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This item is warranted for 3 years
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Ref.: 65551
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Description


Essential information about the Envelope Filter Q pedal



  • Envelope filter responsive to dynamics: the harder you play, the more the filter opens for an expressive "auto-wah" effect.

  • Q (resonance) control to switch from a smooth, rounded sweep to a sharper, funkier peak.

  • 3 selectable filters to vary the tone (warmer, sharper, more balanced) without changing your playing settings.

  • Ideal for funk, blues, rock and modern textures, both in studio and live settings.


A classic filter pedal, revisited with a Q control


The envelope filter is one of the most "alive" effects on the pedalboard: instead of sweeping the filter with your foot like a wah, it's your attack (right hand, palm-mute, accents) that triggers the filter movement. This approach, popularized by pedals that have become cult favorites in the funk and groove world, remains essential whenever you seek an articulated quack sound, a vocal sweep, or almost synth-like colors.


With its Q control and 3 selectable filters, the Envelope Filter Q focuses on what really matters: the ability to adjust the resonance and character of the filter to match your guitar, pickups, and playing style.


Who is the Envelope Filter Q for, and in which styles does it make a difference?


This pedal is aimed at guitarists (and bassists) who want an expressive effect capable of following the nuances of both clean and more aggressive playing. In funk and neo-soul, it delivers the famous percussive and "speaking" quality on sixteenth notes and double strokes. In blues and rock, it becomes a dynamic coloration to boost a riff, thicken a lead, or create a "vocal-like" response on single-note phrases.


On a pedalboard, it is often placed before overdrives to preserve attack sensitivity, or after for a smoother, more compressed effect. In the studio, it is a powerful tool to make a track stand out in the mix without increasing volume, thanks to the filter movement and adjustable resonance.


Controls and modes: 3 filters + a Q to sculpt the sweep


The heart of the Envelope Filter Q is the interaction between the envelope detection (how the pedal "reads" your playing) and the Q control. In practice, Q affects the filter's resonance: the higher it is, the more pronounced the peak and the funkier, more incisive the effect; the lower it is, the smoother and more musical the sweep remains, perfect for subtle lines or chords.


The 3-filter selector lets you change the filter curve and the feel under your fingers: from a warmer, fuller sound to a sharper, more articulated response, with a versatile balance in between. The result: you can quickly adapt the pedal to your guitar (single coils, humbuckers), your gain level, and your context (tight rhythm, lead, textures).


The sound


The Envelope Filter Q delivers a classic "auto-wah" sound with an organic sweep, highly dependent on your touch. The pedal can go from a subtle movement that adds depth to a much more expressive effect, with a pronounced quack and a "speaking" filter impression. The Q control is key: it allows you to dial in the resonance peak's presence, thus how much the effect cuts through the mix.


With light playing, the filter stays more closed and retains a muffled character; with a stronger attack, it opens up with more brightness and bite. This is precisely what makes the envelope filter so musical: it reacts like an extension of your right hand. With single-coil pickups, expect a snappy, funky articulation; with humbuckers, the effect gains density and thickness, ideal for rockier riffs.


Technical specifications


Effect type



  • Effect: Envelope Filter / Auto-wah (driven by playing dynamics)

  • 3 selectable filters

  • Q control (resonance) to shape the filter response


Controls



  • Q (resonance) control

  • 3-position selector for filter choice


Included accessories



  • Pedal

  • Documentation


Power consumption



  • Power supply: 9V DC

  • Current draw: 50 mA


Brand reference number: EHXMQTRON

Testimony

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Envelope filter pedal that I use with basses. As with all products from the EHX brand, which I particularly appreciate for the solidity of its products, the casing is very sturdy. 2 knobs, Drive (effect level) and Q (effect range) and a frequency band selector swept by the effect. You have to be meticulous in the settings to get the desired effect, alone for a funky effect or with a fuzz for a noisy side, everyone can find their happiness. Note the presence of a trimpot inside the pedal, but it is not indicated in the manual so I did not touch it. A must-have on a bass pedalboard in my humble opinion.
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Posted on 10/01/2022
By GMR
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Simple to use and nice output sound. It sounds 70's and funky when you snap the guitar. Top!
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Posted on 16/02/2022
By Jean-Philippe
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