Electro-Harmonix Q-TRON + – effects pedal

The Q-Tron+ is the ultimate envelope filter — a true funk legend, reborn. Designed in collaboration with Mu-Tron co-founder Mike Beigel, it responds directly to your attack, producing dynamic, vocal, quack-like sweeps. The Mode selection (Low-, Band-, or High-Pass), Peak, and Gain controls provide complete tonal control, while the FX loop places external effects in the filter chain. Thanks to the Response switch, you can toggle between smooth and fast responses. From vintage Bootsy groove to modern synth textures — this is pure analog magic.