Warm Audio WA-C1-Mod Guitar Effect

Warm Audio WA-C1 Mod — Analog Stereo Chorus and Vibrato in a Compact Format

The WA-C1 Mod is a compact stereo effect pedal for players who want authentic analog chorus and vibrato with the character of classic vintage circuits, but better suited to modern pedalboards and more complex signal chains. It takes over the character of the larger WA-C1 in a smaller enclosure.

Bypassable Analog Preamp

The 100% analog preamp follows the well-known original design and adds punch, depth and gentle natural compression to the guitar. Switching from Vintage to Modern takes the preamp out of the signal path, which makes precise level and gain staging easier.

Chorus with Separate Depth and Rate

Unlike older versions with a single intensity control, the WA-C1 Mod offers separate depth and rate controls for the chorus, from subtle modulation to a pronounced effect.

Three-Dimensional Vibrato

The vibrato section delivers rich, lively modulation for funk, fusion, blues, jazz and other styles, including colours reminiscent of a rotary speaker.

Controls and Switches

• Input sensitivity High/Low and preamp level
• Chorus Depth and Rate, Vibrato Depth and Rate
• Chorus/Vibrato and Vintage/Modern switches
• Hi-Z on/off (rear panel): 50 kΩ or 1.1 MΩ; works in bypass as well
• Flashing LED: shows the active mode and modulation speed

Circuit and Power

The circuit uses 5 ICs including 3 premium Texas Instruments audio op-amps in the signal path, 11 discrete transistors, 3 FETs, 19 diodes, 2 MOSFETs and a modern recreation of the MN3007 BBD chip. A dual DC-DC converter provides the correct internal voltage from an external 9 V supply.

Specifications

• Connections: 1× input, 2× output (stereo)
• Input sensitivity: 80 mV / 10 mV
• Output level: 315 mV
• Consumption: 800 mW, 200 mA at 9 V
• Dimensions: 11.4 × 7.1 × 6.1 cm (L × W × H)
• Weight: 0.45 kg