This Pedal is discontinued.
VC Envelope Filter, Auto-Wah
Due to trademark issues in the US released under the name Tru-Tron 3X only. Mu-Tron 3X is the European version. It's designed by legend Mike Beigel who used to run Musitronics, worked with Guild, Arp and Electro Harmonix (see Q-Tron).
Mu-Tron Mu-Tron 3X
Beigel Sound Lab/Mu-FX Mu-tron 3X
Beigel Sound Lab Mu-tron 3X (
Beigel Sound Lab Mu-Tron 3x
Mu-Fx Mu-Fx Tru-Tron 3X
Beigel Sound Lab MU-FX Tru-Tron 3x