Carl Martin Ottawa vs Electro-Harmonix Doctor Q
The Carl Martin Ottawa and the Electro-Harmonix Doctor Q are both pedals sharing dynamic, analog warmth. Current prices: $150.88 vs $86.
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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.61% — moderately similar
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Genres both listings are associated with.- Soul
- Funk
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Derived from overlapping tonal signals across both listings.- dynamic
- analog warmth
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$150.88via Reverb
$86via Reverb
The Carl Martin Ottawa is an analog optical envelope filter pedal delivering classic auto-wah and filter sweep effects without a treadle. Features three selectable filter modes: High Pass (HP), Band Pass (BP), and Low Pass (LP) for different frequency response characters. Q control shapes resonance and filter sweep width. Attack and Tone controls adjust filter response timing and high-frequency content. Current draw approximately 14mA. Danish boutique analog construction. Suited for funk, soul, and R&B guitar and bass players seeking touch-sensitive auto-wah tones.
The Electro-Harmonix Doctor Q is a classic analog envelope filter and auto-wah pedal from Electro-Harmonix, originally introduced in 1976, delivering pick-attack-responsive filter sweeps with a single Sensitivity control. The Doctor Q is one of EHX's earliest and most historically significant effects pedals, producing the funky auto-wah character popularized in 1970s funk and soul recordings. The simple single-knob design delivers immediate envelope filter response.
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Genres this gear is documented as being used in.- Classic Rock