Electro-Harmonix Effect Pedals - Micro Q-Tron

The Micro Q-Tron is a great envelope filter for bass with a particularly cool and funky wah tone controlled by an internal envelope follower. It analyzes both the volume and playing dynamics and then sweeps the filter's center or cutoff frequency - meaning the louder and harder you play, the wider the frequency sweep, while softer playing generates a more subtle effect. The Q knob in the center controls the effect. The Mode knob lets you select between High Pass, Band Pass, and Low Pass filters. Drive sets the sensitivity and filter sweep range, for even more control of its tone. Here in a compact and durable die-cast chassis, the Micro Q-Tron runs on a 9V battery of DC power supply.