Source Audio One Series C4 Synth Pedal

Inspired by Eurorack rigs, Source Audio's C4 Synth is a powerful modular synthesizer in a pedal. Dial in your sound with easy presets and deep customization!

Bob Chidlaw (Source Audio's Chief Sound Engineer), feeling inspired by his personal Eurorack modular synth rig, set out to built a powerful synthesizer machine, the C4 Synth Pedal, specifically designed to live inside the compact structure of a Source Audio One Series housing. The C4 is, for all intents and purposes, a modular synthesizer in an box.

Check out our zZounds exclusive demo of the Source Audio C4 synthesizer pedal:

On the surface, the C4 features a simple 4-knob interface and a choice of three guitar/bass synthesizer effects -- just plug in and submerge your instrument in a sea of swelling, buzzing, and swirling synth tones. If you want to take things to take things a bit further, connect the C4 to the Neuro Desktop Editor (a free download for Mac and Windows) or Neuro Mobile App (a free download for iOS and Android). Inside the Neuro Editors you will find the tools to personally create your own retro-futuristic synthesizer tones. Use the C4's collection of four parallel voices, three oscillator wave shapes, ten-plus envelope followers, twenty-plus modulating filters, distortion, tremolo, pitch shifting, intelligent harmonization, programmable sequencing and more to dial in that perfect tone.

Hear what the C4 Synth can do in Source Audio's preview demo video:

Find it all, from the classic synth tones you've always wanted to replicate to those illusive abstracts you've imagined, but never actually heard. If you're short on time and/or patience, it's very easy read more to find tons of great sounds -- simply call up an effect from countless presets created by the Source Audio team or the growing legion of C4 users.
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- Length: 11.63 cm (4.58 inches)
- Width: 7.00 cm (2.75 inches)
- Height (not including knobs and footswitch): 3.71 cm (1.46 inches)
- Height (including knobs and footswitch): 5.61 cm (2.21 inches)

Weight: 280 grams (0.625 pounds)

- 9V DC, minimum 165 mA (maximum 195 mA when connected to a power reliant externalcontroller)
- Negative tip (positive sleeve) barrel power jack, 2.1 mm inner diameter, 5.5 mm outer diameter

Audio Performance:
- Maximum Input Level: +6 dBV = 8.2 dBu = 2 V RMS = 5.6 V p-p
- Input Impedance: 1 MegaOhm (1 MΩ)
- Output Impedance: 600 Ohm (600 Ω)
- 108 dB DNR Audio Path
- 24-bit Audio Conversion
- 56-bit Digital Data Path
- Universal Bypass (relay-based true bypass and analog buffered bypass)
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 1 lbs
Shipping Dimensions: 7 x 5 x 3 in
Manufacturer Part Number (MPN): SA249

For support or warranty questions, please contact the manufacturer:
Phone: 781-932-8080

Reviewers gave this product an overall rating of 5 out of 5 stars. (2 ratings)
Submitted August 16, 2023 by a customer from

"Source Audio C4 synth"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Welcome to the wild, weird, & wonderful sounds of synth & this pedal has ALOT of to chose from! My 1st & I believe will be the last synth I'll ever need, awesome sounds out of the box & so much more to tweak. This pedal is DEFINITELY worth the money especially if you kinda gotten tired of the same 'ol distorted & clean tones this opens up a new way of playing as well & musical ideas on guitar as well there is latency but I'm sure that can be improved by adjusting the right settings. If you like to play around with sounds & programs this is a very fun & interesting pedal, even if you don't, there's tons more presets to choose from the community on the Neuro app & factory as well. After much thought & research on my opinion this is the best synth pedal for guitar on the market hands down!
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