KEELEY Neutrino V2 Envelope Filter solid-gold-fx the Apollo VII becomes much

the Apollo VII becomes much more touch-sensitive and will growl and bark with astounding dynamic variation

9v center negative tip (external power supply only)

Billy Preston

and quiet digital switching

KEELEY Neutrino V2 Envelope Filter solid-gold-fx the Apollo VII becomes muchThe Keeley Neutrino V2 is an amazingly toneful and compact form of the classic opto coupler envelope filter. The Neutrino takes your guitar playing and creates an automatic wah sound based on your pick attack! Envelope filters or auto wahs as they are often called, sound and react best when they are opto coupler based. The opto couplers used in the Neutrino are particularly smooth, giving you an amazing vowel like tone. The Keeley Neutrino gives you 3