Electro-Harmonix XO Q-Tron

Controls

  • Drive (Up/Down)
    selects direction of filter sweep : upwards or downwards.
  • Norm/Boost
    Normal mode allows setting the Gain control without changing the output volume.
  • Peak (Q on the Mini Q-Tron)
    Determines frequency peak of filter. Makes more "effected sound" when turned up more.
  • Gain
    Functions as both a volume control and a filter sensitivity control in boost mode. In normal mode it acts only as a filter sensitivity control, unlike the Mutron-III which also changes the unit's output volume.
  • Range (Hi/Lo)
    Emphasizes vowel like sounds in low position, overtones in high position.
  • Mode (LP/BP/HP/Mix)
    Select the filter used by the effect: Lowpass, Bandpass, Highpass or a mix of Bandpass with dry unprocessed sound.
  • Response (Slow/Fast)
    Selects either a slow, smooth, vowel-like attack or the fast, snappy response of the original Q-Tron.

Various

Electro-Harmonix

Improve your Groove. The phattest, funkiest envelope filter ever made! Switchable Boost and Filter modes allow for an unlimited supply of new auto-wah effects that drip with attitude. Increased frequency response and improved signal-to-noise ratio make the Q-Tron perfect for use with any instrument. Bootsy Collins and George Clinton already have theirs. How about you?

Reviews

myFXDB user reviews

1 review, average score of 8 / 10

DateUserVersionScorePositiveNegative
2015-08-23Arielabe8/10  The big daddy of filter pedalsEvery single bass player on the planet owns one...I'm actually getting a bit sick of hearing them TBH

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envelope-controlled envelope follower amplitude controlled fx pedal stompbox stomp box guitar effects pedal filter eq/excite/filter lowpass lopass lo-pass lp lpf low-pass filter hpf hipass hi-pass highpass hp high-pass filter bandpass bp bpf band-pass filter
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