Keeley Neutrino V2

The 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. 

Main Features:
•    Envelope filter and Auto-Wah effect pedal
•    Tracks perfectly for guitar, bass and keyboard
•    3 filter bands
    o    L: Low Pass
    o    B: Band Pass
    o    H: High Pass
•    Range switch - adjusts operating range of the variable filter
    o    LO for emphasis on low registers
    o    HI for accentuating higher notes
    o    Switchable TRS effects loop
•    Switchable filter sweep direction
•    Top-Mounted Jacks - for a compact pedalboard layout
•    Made in Edmond, USA
•    Powered by a regular 9V DC PSU  
    (centre -, 2,1 mm, low ~25 mA current draw)

The Keeley Neutrino gives you 3 filter ranges, 2 directions, 2 ranges for the frequency center and a Peak control. Keeley has engineered a power supply voltage-doubler so you maintain the highest headroom for your tone.
An incredibly tough build means it will last for many decades to come. Whether you’re in a jam band or playing funk, the Keeley Neutrino V2 delivers incredible vocal-like tone.