Keeley Neutrino V2 vs Maxon AF-9 Auto Filter
The Keeley Neutrino V2 and the Maxon AF-9 Auto Filter are both pedals sharing dynamic, analog warmth. The Keeley Neutrino V2 leans mid-forward. Current prices: $152.15 vs $270.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.42% — somewhat different
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Genres both listings are associated with.- Funk
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Derived from overlapping tonal signals across both listings.- dynamic
- analog warmth
Keeley Neutrino V2
Keeley · pedal
Maxon AF-9 Auto Filter
Maxon · pedal
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$152.15via Reverb
$270via Reverb
The Keeley Neutrino V2 is a compact, all-analog opto-coupler envelope filter and auto-wah that creates a touch-sensitive wah sound from your pick attack. Hand-selected opto-couplers, described as higher grade than those in vintage originals, give it a smooth, vowel-like, vocal tone. It offers three filter ranges, two sweep directions, two frequency-center ranges, and a Peak control for shaping resonance, with true bypass to avoid tone suck. It suits funk, fusion, and expressive playing where dynamic filter movement adds vocal character to lines. Simple to dial in for a satisfying auto-wah, it is a small, focused envelope filter, though some players find its output can sound thinner than they expect at certain settings.
The Maxon AF-9 Auto Filter is an analog envelope filter that opens and closes an optical photocoupler filter in response to pick attack, producing the warm, vowel-like, liquid and shimmering sweep associated with vintage units like the Mu-Tron III. It offers low-pass, band-pass, and high-pass filter modes with switchable direction, plus threshold and peak controls that shape how quickly and how far the filter sweeps. Two selectable frequency ranges let it track both guitar and bass cleanly. It is closely associated with funk and soul playing, where its liquid, three-dimensional quacking response reacts directly to how hard notes are picked, and it remains a favored alternative to pricier vintage envelope filters for players chasing that vowel-like auto-wah character.
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Genres this gear is documented as being used in.- Alternative Rock
- Metal
- Soul
- mid-forward