Step into the golden age of analog modulation with the Warm Audio WA-C1 Stereo Chorus/Vibrato Pedal, a faithful recreation of the most sought-after vintage chorus and vibrato tones ever made. Built with authentic bucket brigade circuitry, the WA-C1 captures the lush, organic movement and warmth that defined classic recordings of the 1970s and 1980s. From smooth, shimmering choruses to deep, dimensional vibrato sweeps, this pedal delivers a sonic experience that’s as musical as it is inspiring. At its core, the WA-C1 features a fully analog preamp stage, providing natural harmonic drive and a responsive feel that enhances your tone even before modulation is applied. The preamp alone can act as a tonal sweetener, adding subtle saturation and bite to your signal. With independent chorus and vibrato sections and dual footswitch controls for bypass and effect selection, the WA-C1 gives players total control on stage or in the studio — switch between vintage-style chorus and lush vibrato textures instantly, all without touching a knob. Warm Audio engineered the WA-C1 for the modern musician without sacrificing its analog heart. The true stereo outputs allow you to build massive, immersive soundscapes that fill any mix or performance space, while the hi-Z switch ensures compatibility with guitars, basses, keyboards, and other line-level instruments. Whether you want to recreate the darker, warmer modulation of the ’70s or the sparkling clarity of the ’80s, the WA-C1 makes it easy to shape your sound with precision and authenticity. Under the hood, the WA-C1 is packed with three premium Texas Instruments op-amps, ensuring crystal-clear fidelity and smooth, noise-free performance. Each pedal is hand-tested in Austin, Texas, guaranteeing Warm Audio’s signature quality and reliability. From gentle chorus shimmer to swirling vibrato waves, the WA-C1 delivers boutique-grade tone that rivals — and often surpasses — the legendary pedals that inspired it. Designed for players who crave real analog feel and exceptional control, the Warm Audio WA-C1 isn’t just another modulation pedal — it’s the rebirth of a vintage classic, perfected for the modern era.

• Authentic Analog Bucket Brigade Modulation: Experience lush, organic chorus and vibrato tones with the Warm Audio WA-C1, featuring true bucket brigade circuitry for classic analog warmth. Unlike digital emulations, this pedal delivers genuine modulation depth and dimension inspired by rare vintage pedals from the ’70s and ’80s, offering smooth, musical movement in every note.
• Independent Chorus And Vibrato Controls: The WA-C1 provides completely independent controls for both chorus and vibrato effects, letting you craft subtle textures or rich, immersive modulation layers. Toggle seamlessly between the two using the dedicated mode and bypass footswitches for precise, hands-free operation — perfect for live performances or studio sessions.
• Analog Preamp Adds Drive And Harmonic Detail: Built with a responsive analog preamp, the WA-C1 enhances your tone with added presence, natural compression, and midrange character. It’s more than a modulation effect — it can act as a tone enhancer or light overdrive, delivering a lively, expressive sound that reacts beautifully to your guitar’s dynamics and touch.
• Stereo Outputs For Expansive Soundscapes: Take advantage of true stereo output to create wide, dimensional tones that fill the room. Whether you’re running dual amps or recording in stereo, the WA-C1’s spacious modulation delivers the depth and clarity needed to elevate your guitar or keyboard sound to professional, studio-quality levels.
• Hi-Z Switch For Multi-Instrument Flexibility: The rear-panel hi-Z selector lets the WA-C1 adapt to any sound source — from high-impedance guitar pickups to line-level keyboards. Combined with three premium Texas Instruments op-amps and hand-testing in Austin, Texas, this pedal ensures pristine sound quality, superior responsiveness, and unmatched tonal versatility.
• Authentic Analog Bucket Brigade Modulation: Experience lush, organic chorus and vibrato tones with the Warm Audio WA-C1, featuring true bucket brigade circuitry for classic analog warmth. Unlike digital emulations, this pedal delivers genuine modulation depth and dimension inspired by rare vintage pedals from the ’70s and ’80s, offering smooth, musical movement in every note.
• Independent Chorus And Vibrato Controls: The WA-C1 provides completely independent controls for both chorus and vibrato effects, letting you craft subtle textures or rich, immersive modulation layers. Toggle seamlessly between the two using the dedicated mode and bypass footswitches for precise, hands-free operation — perfect for live performances or studio sessions.
• Analog Preamp Adds Drive And Harmonic Detail: Built with a responsive analog preamp, the WA-C1 enhances your tone with added presence, natural compression, and midrange character. It’s more than a modulation effect — it can act as a tone enhancer or light overdrive, delivering a lively, expressive sound that reacts beautifully to your guitar’s dynamics and touch.
• Stereo Outputs For Expansive Soundscapes: Take advantage of true stereo output to create wide, dimensional tones that fill the room. Whether you’re running dual amps or recording in stereo, the WA-C1’s spacious modulation delivers the depth and clarity needed to elevate your guitar or keyboard sound to professional, studio-quality levels.
• Hi-Z Switch For Multi-Instrument Flexibility: The rear-panel hi-Z selector lets the WA-C1 adapt to any sound source — from high-impedance guitar pickups to line-level keyboards. Combined with three premium Texas Instruments op-amps and hand-testing in Austin, Texas, this pedal ensures pristine sound quality, superior responsiveness, and unmatched tonal versatility.