Source Audio
Source Audio C4 Synth Synthesizer Guitar Effects Pedal
Best creative tool for guitarists seeking modular synthesizer textures.
Unleash your inner synth wizard with the Source Audio C4 Synth pedal. This compact stompbox brings the power of a Eurorack modular synthesizer to your guitar or bass. Explore a universe of sound with four independent voices, each offering three oscillator wave shapes. Dive into 25 filter effects and 14 wave shapes, all controllable by LFOs or envelope followers. Experience lightning-fast tracking and imperceptible latency for seamless performance. Customize your sound with the free Neuro software and store up to 128 presets, with six readily accessible from the pedal.
$269.00
Owner Satisfaction
4.7
/ 5
Category Rank
26
/ 207
#26 in Effects Processors
Price vs Category Average
-40%
Below average
Housing
Brushed anodized aluminum
/ Brushed anodized aluminum
Who it's for
- Sound designers seeking limitless sonic textures and synth exploration
- Performers requiring precise, lag-free tracking for live sets
- Tinkerers who enjoy deep software editing and community preset sharing
Who should skip it
- Players who prefer intuitive, plug-and-play knob-per-function interfaces
- Gigging musicians needing immediate, hands-on control during live performances
- Purists demanding the organic warmth of vintage analog circuitry
Performance breakdown
Tracking Speed
Near-instant response makes complex synth lines feel natural and fluid.
Sound Design Depth
Modular architecture offers virtually limitless sonic exploration for adventurous players.
Software Integration
Neuro software provides an intuitive interface for deep, granular parameter control.
Preset Accessibility
Massive onboard storage ensures your custom patches are always gig-ready.
Build Quality
Rugged brushed aluminum housing handles the rigors of constant touring.
Ease of Use
Deep features require a learning curve for those new to synthesis.
Key Specs
Housing
Brushed anodized aluminum
Weight
0.625 lb
Dimensions
4.6” × 2.75” × 2.2”
Preset Memory
128 presets
Bypass Options
Universal Bypass™ (True Bypass or Buffered)
Connectivity
Mini USB, 1/4 inch Jack (Stereo I/O)
MIDI Compatibility
Yes
Signal Path Type
Digital
Features
- Modular synth architecture in a pedal
- Supreme tracking speed and low latency
- Deep editing via Neuro software
- 128 onboard presets
- Stereo I/O for versatile routing
- Universal Bypass™ for signal integrity
- Four independent synth voices
- Extensive filter and wave shape options
What customers say
The Source Audio C4 Synth pedal is celebrated for its impressive sonic versatility, rivaling classic analog synthesizers with its vast sound palette. Musicians consistently highlight its exceptional tracking performance, noting its speed and accuracy across diverse playing styles. While the accompanying Neuro Editor software offers deep customization, some users find its learning curve challenging. However, the effort invested is widely considered worthwhile, as the C4 delivers professional grade results. It provides immense value for integrating sophisticated synth sounds directly onto a pedalboard, making complex synthesis accessible for many musicians.
Know before you buy
Yes, the C4 Synth is designed to track perfectly for both guitar and bass. Its high-speed processing ensures that low-end frequencies are handled with the same precision and low latency as higher registers.
While the pedal features six onboard presets for quick access, the Neuro software is essential for unlocking the full depth of the C4. It allows you to design custom synth patches, access deep editing parameters, and manage your library of 128 total presets.
Yes, the C4 Synth is fully MIDI compatible. You can use MIDI to switch presets, control parameters in real-time, or integrate the pedal into a larger, complex pedalboard setup.
Universal Bypass allows you to choose between True Bypass, which removes the pedal completely from your signal chain when off, and Buffered bypass, which helps maintain signal integrity over long cable runs. You can select the mode that best fits your specific rig requirements.
Absolutely. The pedal features stereo input and output jacks, making it ideal for stereo pedalboard setups, synthesizers, or studio recording applications.
The C4 Synth features four independent voices. You can layer these voices to create complex, thick textures or use them individually to build intricate, modular-style synth sounds.
Still have a question?
Ask Hayley anything about this product before you decide.