The Warm Audio WA-C1 Mod is a compact, pedalboard-friendly recreation of a celebrated all-analog chorus and vibrato circuit, combining the rich modulation character of the original design with practical modern features. Its 100% analog signal path and stereo wet/dry output configuration provide lush chorus tones.

The WA-C1 Mod delivers deep, detailed chorus modulation through a modern MN3007 BBD chip recreation and carefully selected premium components. Separate Depth and Rate controls for the chorus section expand the tonal range beyond the limitations

A rear-panel Hi-Z switch provides selectable 50kΩ vintage input impedance or 1.1MΩ high-impedance operation, making the pedal adaptable to different instruments and signal sources.

Key Features

• 100% analog compact stereo chorus and vibrato pedal.
• Pedalboard-friendly recreation of a celebrated all-analog chorus circuit.
• Bypassable analog preamp with Vintage/Modern operation.
• Separate Chorus Depth and Rate controls.
• Separate Vibrato Depth and Rate controls.
• Modern MN3007 BBD chip recreation.
• Selectable 50kΩ and 1.1MΩ Hi-Z input impedance.
• Wet/dry stereo output configuration.

Ideal For

• Clean-channel guitar setups.
• Mid-gain and dirty amplifiers.
• Classic grunge tones.
• 80s analog new-wave sounds.
• Stereo dual-amp rigs.
• Wide stereo modulation soundscapes.
• Funk, fusion, blues, and jazz guitar.
• Players seeking authentic analog chorus and vibrato effects.

What’s in the Box

• Warm Audio WA-C1 Mod Chorus Vibrato Pedal.

Inputs & Outputs

• Input: 1 × 1/4" input jack.
• Outputs: 2 × 1/4" output jacks.
• Input Sensitivity: 80mV / 10mV.
• Output Level: 315mV.
• Hi-Z: Selectable 50kΩ vintage impedance or 1.1MΩ high-impedance setting.
• Power Input: 9V DC pedal power.

Frequently Asked Questions

What is the Warm Audio WA-C1 Mod?

The Warm Audio WA-C1 Mod is a compact stereo chorus and vibrato pedal based on a celebrated all-analog modulation circuit, with added preamp bypass, selectable impedance, and separate chorus Depth and Rate controls.

Is the WA-C1 Mod fully analog?

Yes. The WA-C1 Mod uses a 100% analog signal path and an analog preamp, together with a modern MN3007 BBD chip recreation for its chorus modulation.

Can the preamp be bypassed?

Yes. The Vintage/Modern Preamp switch allows the analog preamp to be bypassed in Modern mode, providing additional flexibility for gain-staging within complex signal chains.

What controls does the WA-C1 Mod have?

The pedal includes High/Low Input Sensitivity, Preamp Level, Chorus Depth and Rate, Vibrato Depth and Rate, Effect On/Off, Chorus/Vibrato selection, Vintage/Modern Preamp selection, and Hi-Z On/Off controls.

Full Technical Specifications

Technical Specifications

Circuit	100% Analog Chorus & Vibrato
Preamp	100% Analog, Bypassable
Preamp Modes	Vintage / Modern
Controls	High/Low Input Sensitivity, Preamp Level, Chorus Depth & Rate, Vibrato Depth & Rate, Effect On/Off, Chorus/Vibrato Switch, Vintage/Modern Preamp Switch, Hi-Z On/Off
Chorus Controls	Depth and Rate
Vibrato Controls	Depth and Rate
Input Impedance	50kΩ Vintage / 1.1MΩ Hi-Z
Components	5 × ICs, 11 × Discrete Transistors, 3 × FETs, 19 × Diodes, 2 × MOSFETs
Op Amps	3 × Texas Instruments Premium Audio Op Amps in Signal Path
BBD	Premium MN3007 BBD Chip Recreation
Input	1 × 1/4" Input
Outputs	2 × 1/4" Outputs
Input Sensitivity	80mV / 10mV
Output Level	315mV
Bypass	Preamp Bypass via Vintage/Modern Switch
Power Consumption	800mW / 200mA at 9V
Voltage Conversion	Dual DC-DC Voltage Converter
Power Supply	9V DC
Enclosure	Compact Pedalboard-Friendly Enclosure
Jacks	Top-Mounted

Electrical & Environmental Specifications

Power Supply	9V DC
Power Consumption	800mW / 200mA at 9V
Internal Voltage Operation	Vintage-Correct via Dual DC-DC Voltage Converter
Preamp	100% Analog, Bypassable
Input Impedance	50kΩ Vintage / 1.1MΩ Hi-Z
Warranty	5 Years
Hand Testing	Austin, Texas, USA

Physical Specifications

Product Weight	1 lb.
Product Dimensions (L x W x H)	4.5" x 2.8" x 2.4"
Shipping Dimensions (L x W x H)	7" x 4.3" x 4.1"
Master Pack Quantity	20
Master Pack Weight	27 lbs.
Master Pack Dimensions (L x W x H)	21.5" x 18.3" x 7.9"
Country of Origin	China