Used Keeley NEUTRINO ENVELOPE FILTER Effect Pedal

Add funk, quack, and touch-sensitive movement to your tone with this used Keeley Neutrino Envelope Filter in great condition. Designed for guitar or bass, it delivers dynamic auto-wah response that follows your picking intensity, with easy controls for sensitivity, filter range, and attack/decay shaping. Compact and pedalboard-friendly, it features standard 1/4" input/output and runs on 9V DC center-negative power. Perfect for funk, jam, and expressive lead textures.