Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter vs DigiTech DOD Envelope Filter 440
The Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter and the DigiTech DOD Envelope Filter 440 are both pedals sharing dynamic, analog warmth. The Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter leans transparent. Current prices: $149.31 vs $111.45.
cited
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.60% — moderately similar
cited
Genres both listings are associated with.- Funk
cited
Derived from overlapping tonal signals across both listings.- dynamic
- analog warmth
cited
Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$149.31via Reverb
$111.45via Reverb
The Carl Martin Ottawa is an analog optical envelope filter pedal delivering vintage auto-wah and filter sweep effects triggered by picking attack. Three selectable filter modes (High Pass, Band Pass, Low Pass) provide distinct frequency response characters. Q control shapes resonance, while Attack and Tone controls adjust filter timing and high-frequency content. Approximately 14mA current draw. Danish boutique analog construction. Produces classic funky envelope filter tones for guitar and bass without a treadle.
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.
cited
Genres this gear is documented as being used in.- Soul
- Electronic
- Rock
- Experimental
- transparent