DigiTech DOD Envelope Filter 440 vs Rocktron Heart Attack Dynamic Filter
The DigiTech DOD Envelope Filter 440 and the Rocktron Heart Attack Dynamic Filter are both pedals sharing dynamic. Current prices: $107.36 vs $34.19.
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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.57% — moderately similar
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Genres both listings are associated with.- Funk
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Derived from overlapping tonal signals across both listings.- dynamic
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$107.36via Reverb
$34.19via Reverb
The DOD Envelope Filter 440 is a classic analog envelope filter and auto-wah pedal originally produced by DOD Electronics in 1977, delivering pick-attack-responsive filter sweeps with Sensitivity and Range controls. The DOD 440 became a widely used auto-wah with players including Jerry Garcia, who used it on the Grateful Dead's recordings. Later reissued under the DigiTech/DOD brand. An important pedal in envelope filter history.
The Rocktron Heart Attack is a dynamic filter and auto-wah pedal from Rocktron (Battle Creek, Michigan), delivering touch-sensitive envelope filter auto-wah that responds to pick attack for funky filter effects at accessible Rocktron pricing.
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Genres this gear is documented as being used in.- Electronic
- Rock
- Experimental