Warm Audio WA-C1 – Stereo Chorus & Vibrato Pedal w/ Depth & Rate Controls

OVERVIEW

The Original Chorus Tone That Set The Standard

The WA-C1 has all of the vintage tones, functionality, and vibe of the famous original chorus/vibrato pedal with added controls to separate rate and depth and brighten the tone. Like the lauded original, WA-C1 has a dedicated vibrato section and an always-on 100% analog preamp that adds tons of analog tone and character. The carefully designed circuit helps bring the vintage depth of the modulation when turned all the way up, and also allows the WA-C1 to have variable depth to dial back for subtle tones. True to the original pedal, WA-C1 delivers rich depth and wobbly rate in waves, favoured by legendary musicians like The Police, Queen, Stone Temple Pilots, Rush, Red Hot Chili Peppers, and more.

Deeper, Richer, Bigger: Chorus & Vibrato Tone

The WA-C1 delivers lush midrange depth and detail associated with proper Bucket Brigade Device analog chorus pedals. On vintage units, “intensity” increased the speed of the LFO with the triangle wave shape, impacting the delay time of the BBD chip and creating a more lush tone and faster rate. With the WA-C1, you can go beyond the limitations of vintage pedals by dialling in more subtle depth and the same varying rates for a larger palette of chorus tones. When engaging the hi-z, the chorus instantly transforms from a ’70s colour to an ’80s colour, with added upper-mids and treble. Engaging the “high” input sensitivity setting can be used to add headroom and clarity to the overall pedal tone. WA-C1 adds a flashing LED for effect monitoring on the face showing which setting is engaged, along with the rate of the modulation. A true-to-original recreation, WA-C1 is 100% analog, using premium components like the MN3007 Xvive BBD chip.

Applications

Electric Guitar – Dark 70s-Style Chorus:

The original “darker” chorus tone, just like the most lush late-70s modulated guitar tones.

Electric Guitar – Pristine 80s Chorus:

Crystal-clear new-wave style 80s guitar chorus with pristine note separation.

Electric Guitar – Rotary-Style Subtle Vibrato:

Just a bit of wobble & depth help guitar picking parts and solos stand out.

Electric Keys – Leslie-Style Chorus:

Added 3D modulation creates depth and wobble to various types of electric keyboard sounds.

“Once again this pedal proves that Warm Audio are masters at not just recreating the sound of a classic pedal, but the vibe too – and that’s something we can all enjoy.” — Guitar.com

KEY HIGHLIGHTS

Custom Enclosure & Classic MN3007 BBD Chip

The WA-C1 enclosure is custom and finished in a rugged exterior with carefully tapered knobs. Leveraging a modern MN3007 BBD chip recreation by Xvive as the centrepiece to the circuit’s modulation, WA-C1 is carefully clocked to match the depth and rate of the original pedal to reproduce the detail expected from the most sought-after vintage pieces.

Pure Analog Preamp with Modern Power Specs

The WA-C1 has a 100% analog preamp, matched to the renowned original, with level control that adds bite, depth, and even natural harmonic content to guitar tones. The entire pedal circuit is supported internally with a dual DC-DC voltage converter to deliver robust power even when using an external 9V power supply. The preamp tone adds colour and tone even in bypass mode.

Hand-Tested & Inspected in Austin, TX, USA

Every single WA-C1 chorus vibrato is meticulously hand-inspected and calibrated at Warm HQ in Austin, TX, by real musicians and engineers with a passion for superior sound.

FEATURES

• 100% analog stereo chorus and vibrato pedal
• Premium MN3007 BBD chip for authentic vintage modulation
• Independent depth and rate controls for chorus and vibrato
• Dedicated vibrato section for expressive pitch modulation
• Always-on analog preamp adds warmth, depth, and character
• True vintage-style modulation with expanded tonal control
• Hi-Z switch for brighter, more modern tonal options
• High/low input sensitivity for added headroom and clarity
• Stereo outputs for wide, immersive soundscapes
• Rich midrange depth with smooth, musical modulation
• LED indicator shows effect status and modulation rate
• Durable custom enclosure with tactile control knobs
• Hand-tested and calibrated for consistent performance
• Works with standard 9V power supply with internal voltage conversion
• Ideal for electric guitar, keys, and creative modulation effects

SETTINGS

TECHNICAL SPECS

Product Type: 100% Analog Stereo Chorus & Vibrato Pedal with Depth & Rate Controls & Selectable Impedance

Controls:

• High/Low Input Sensitivity
• Preamp Level
• Chorus Depth & Rate
• Vibrato Depth & Rate
• Effect On/Off
• Chorus/Vibrato Switch
• Hi-Z On/Off

Jacks:

• 1 x Input
• 2 x Outputs

Components:

• 5 x IC’s (including 3 x Texas Instruments Premium Audio Op Amps in the Signal Path)
• 11 x Discrete Transistors
• 3 x FETs
• 19 x Diodes
• 2 x MOSFETs
• 1 x Premium Xvive MN3007 BBD Chip Recreation

Power Consumption:

• 800mW
• 90mA at 9V With Vintage-Correct Internal Voltage Operation Via Dual DC-DC Voltage Converter

Input sensitivity: 80mV / 1 0mV

Output Level: 315mV

Dimensions:

• Width — 6.5”
• Height — 3.8”
• Depth — 1.6”

Weight: 1.9 lbs

Warranty: 5-Years

DOWNLOADS & SUPPORT

• User Manual
• Product Registration