Scan code: LN107705 Manufacturer code: KE-NEUTV2

Keeley Neutrino V2 Optocoupler Envelope Filter / Auto Wah pedal

Keeley Neutrino V2 Envelope Filter/Auto-wah Pedal with True Bypass Switching for Guitar, Bass, and Keyboards

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Scan code: LN107705 Manufacturer code: KE-NEUTV2
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Cost of purchase: £179.00
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Cost of purchase: £99
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Keeley - 'Neutrino' V2
Envelope Filter Pedal

Keeley Neutrino

Envelope Filter/Auto-wah Robert Keeley, founder of Keeley electronics likened his company’s ‘Neutrino’ V2 to having ‘Jerry Garcia in a bottle’! Once you step on this immensely fun pedal, it’s easy to see why! This pedal nails some of rock n roll’s most recognisable and classic auto-wah sounds with ease. The answer as to how, lies in the Neutrino’s 100% analogue circuit, alongside the high-grade hand-picked opto-couplers.

The Neutrino features 3 filter types, 2 sweep directions and a peak resonance control which gives huge control of tone and dynamics. A hidden switch found on the side of the Neutrino, changes it's sound from ‘wah’ which would be heard with a filter opening up, to an ‘aw’ sound, heard when the filter changes from open to closed. The Neutrino also works brilliantly well when used with a bass and keyboard too, which only adds to the versatility inside this inventive pedal!

Great fun is to be had with Keeley's impressive 'Neutrino V2', this pedal effortlessly replicates some of the most revered auto-wah tones in rock history. We also happen to think it looks great too!

at a glance • Envelope Filter and Auto-Wah for guitar, bass and keyboard
• Peak Control: Sets how much “quack” there is, or how smooth you roll
• choose between 3 types of filters: High, Low, and Band Pass
• Range Switch: HI or LO
• Made in the USA

Inspired by Classic Funk Auto-Wah Sounds


3 filter typesKeeley’s Neutrino V2 is a hugely musical pedal, from the classic envelope filter family of effects. The Neutrino takes the guitar’s signal and produces an automatic wah sound, highly responsive to your picking attack.

Envelope Filters are well known to perform best when manufactured using opto-couplers. The specific opto-couplers found inside the Neutrino are wonderfully smooth, helping to produce a very vowel-like sound. The Neutrino features 3 filter ranges, 2 directions, 2 ranges for EQ and a responsive Peak control which bring huge versatility to this pedal.

Encased in a rugged and tough metal housing, the Neutrino will provide years upon years of abuse, both live and in the studio. If you’re jamming in a dedicated funk band, or even just want to have some fun at home alone, Keeley’s Neutrino V2 is one of the most authentic and importantly, fun, envelope filter pedals out there available today.

Navigating & Controlling the 'Neutrino V2'


Keeley electronics
'Neutrino v2'
Keeley's pedal often sport a no-nonsense layout. This approach from pedal manufacturers is often welcomed by many guitarists out there who appreciate this, as a busy face panel on a pedal can often intimidate and confuse a guitarist away from truly exploring a pedals potential. Read on below for a brief explanation of the controlling the 'Neutrino V2'!


Filter Band
Selects which pass band filter is in use.
Low Pass- allows low notes to pass and cuts high notes.
Band Pass- Trims both high and lows.
High Pass- Cuts lows and sets the Neutrino to operate with high frequencies.


GainControls the input level of the circuit.


Range SwitchThis switch further adjusts the operating range of the variable filter. Set to 'Lo' to emphasize low registers. Set to 'Hi' to accentuate higher notes.


Output VolumeDetermines the overall output of the neutrino.


PeakControls the filter frequency. Up for greater resonance, down for a more mellow wah.


DirectionControls the direction your filter sound moves. Similar to the direction a wah pedal moves after plucking a note.

Keeley Electronics - 'Neutrino' Envelope Filter V2

The Tech Spec

Features Specification
Pedal Type Envelope Filter
Analogue/Digital Analogue
Inputs 1 x 1/4"
Outputs 1 x 1/4"
Switches Hi/Lo Range
Controls Peak, Filter Type: Highpass, Lowpass, Bandpass
True Bypass Yes
Power Source 9V DC power supply (sold separately)
Power Usage 25mA
Batteries 1 x 9V
Height 2"
Width 2.6"
Depth 4.45"
Voltage 9 Volts
Current 25 mA
Battery Compartment No
Output Channels Mono
Dimensions 66.04 x 50.8 x 113.03 mm (W x H x L)
Passive Pedal No
Additional Information
Scan Code LN107705
Model Number KE-NEUTV2
GTIN 810026440083

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For further information regarding Scan's warranty procedure please see our terms and conditions

12 months
Return to base
DOA Period:
28 days
RTB Period:
12 months
Manufacturer Contact Details
Scan Computers International Limited
Keeley Neutrino V2 Optocoupler Envelope Filter / Auto Wah pedal
Keeley Neutrino V2 Optocoupler Envelope Filter / Auto Wah pedal