Used Electro-Harmonix XO Micro Q-Tron Envelope Filter Guitar Effects Pedal.

Mint, with all original packaging!

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The Micro Q-Tron is a smooth envelope filter with a funky wah-wah tone. The filter is controlled by its internal envelope follower, analyzing the volume of your notes and the dynamics of your playing to directly sweep the filter's center or cutoff frequency. A stronger attack or louder note will produce a wider frequency sweep while softer playing produces more subtle effects. Use the Q control to make the effect more dramatic.

Quick Specs

True bypass

Drive control sets sensitivity and filter sweep range

Selectable low pass, band pass or high pass filters

Q control sets the filter's bandwidth from smooth to funky

Tough and compact die-cast chassis

9-volt battery included

Optional 96DC-200BI power supply available