Electro-Harmonix Q-Tron+

Q-Tron+, Wah-Wah/Auto Wah/Filter for Guitar from Electro-Harmonix in the Q-Tron series.

Splotch 11/10/2010

Electro-Harmonix Q-Tron+ : Splotch's user review

«  The ultimate funky autowah »

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It's a pedal autowah analog effects loop between the preamp and effect (just the detection system noise gate). 2 inputs and 2 headphone jacks.

The controls are:
-Gain: The gain of the preamp.
Peak: The filter gain
-Range: choice between a filter medium low (rather low) or medium high (more guitar).
-Mode: choice of low pass filter, bandpass, highpass or lowpass signal + origin.
-Response: speed of opening and closing the filter (fast or slow)
Drive: choosing the opening direction of the filter to low or low-acute to acute.
-Boost: Once activated the button controls the gain of the preamplifier and the output level of the pedal after the filter.

Have two recordable presets would have been nice given the possibilities of sound.
Requires a supply 24volts.


The configuration is simple and user friendly. However, be advised that we make as many adjustments are possible.

The manual is good too


A true analog autowah with all the fullness and warmth we expect. a true legend pedal.


I use it for 1 year and this pedal has a muscalité for everything related to funk and rytthmique it usually responds very well to the nuances of the game The effects loop is really a definite plus.