Used Keeley NEUTRINO ENVELOPE FILTER Effect Pedal

The used Keeley Neutrino Envelope Filter is in great condition and delivers classic auto-wah funk tones with optical envelope filtering. It features controls for Peak, Filter, and Gain with switchable direction and range settings, offering versatile tonal shaping for guitar or bass. Powered by 9V DC, it’s compact and pedalboard-friendly. This boutique-quality pedal captures expressive dynamic response, perfect for adding movement and character to your sound. A must-have for funk, jam, and experimental players.