Keeley Neutrino Envelope Filter

Dialed in perfectly. Amazing Envelope Filter. The brand new Keeley Neutrino Envelope Filter and Auto-Wah! This funky, tripped-out circuit is something I’ve wanted to do for over a decade. Reviews have been stellar. Each opto-coupler is tuned to perfection; every Keeley Neutrino is like finding a magical vintage unit with that perfect tone. The Keeley Neutrino gives you all the classic, funk, auto-wah sounds and that Jerry-In-A-Box sound. We have used the classic