Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter vs Electro-Harmonix Riddle Q Balls
The Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter and the Electro-Harmonix Riddle Q Balls are both pedals sharing dynamic. The Carl Martin Ottawa Vintage Optical Envelope Auto-Wah/Envelope Filter leans transparent and analog warmth. Current prices: $149.31 vs $155.13.
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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.59% — moderately similar
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Genres both listings are associated with.- Funk
- Soul
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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.$149.31via Reverb
$155.13via 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 Electro-Harmonix Riddle is a Q-Balls style guitar envelope filter pedal from Electro-Harmonix, delivering pick-attack-responsive auto-wah filter sweeps with Q, Range, Mix, and Drive controls. The Riddle produces funky, dynamic filter sweeps that follow playing dynamics with adjustable Q resonance for sharp filter peaks and Drive for adding harmonic content. Operates in both guitar and bass frequency ranges via Range control.
- transparent
- analog warmth