Ardor
GitHub

Open-source guitar processor

Play the whole rig
from four footswitches.

Ardor runs NAM amp captures, cabinet IRs, and 48 built-in effects on a Raspberry Pi. The source is open.

Get startedSee the screens
The Ardor pedal. Its screen shows bank 01 with the Clean Lead preset live in red.
Concept render with the real preset screen. A photo of the built pedal replaces it.

Read it from standing height.

The live preset fills with red. Each tile shows its chain in family colors. The four tiles match the four footswitches.

Preset screen: four preset tiles. Clean Lead is live in red; Ambient, Crunch, and Solo are dark.
PresetsThe live preset is the only red tile.
Tuner screen showing E2 in tune, with the output muted.
TunerThe output mutes. Any footswitch exits.
RAT Distortion controls: Distortion, Filter, and Volume as large sliders.
ControlsLarge values. The encoder edits the control with the red outline.
Scenes screen with four scenes: Verse, Chorus, Solo live in red, and Outro.

Four sounds in one preset.

Scenes change values inside one preset. The audio engine does not reload. Name them verse, chorus, solo, and outro.

Hold FS1 + FS2 to open Scenes.

A four-track looper at your feet.

The first loop sets the length. Each new layer starts on the loop boundary, so the layers stay in time.

Hold the live preset switch for 1 second to open the Looper.

Looper screen with four tracks: playing, recording in red, overdub armed, and muted.

Build the chain from left to right.

Add drive, amp, cabinet, and effect blocks in the order you want. Split into two lanes for a stereo rig.

Dual Rig editor: the input splits into a left lane and a right lane, which join at the output.
Dual RigEach lane has its own amp and effects. The left lane goes left, the right lane goes right.
See the routing rules

Use the tones you already own.

Load Neural Amp Modeler captures and cabinet IRs in the browser manager. Ardor includes no third-party captures.

  • .nam captures
  • Cabinet IRs
  • Reverb IRs
  • MIDI + expression
Realtime engine
48 kHz
Round-trip latency goal
<10 ms
Mono input, stereo output
1 in, 2 out
Safety limiter, always on
−1 dBFS

48 effects in five families.

Each family has one color, on the pedal and in the manager.

Drive

3
  • RAT Distortion
  • Big Cheese Fuzz
  • Tape Machine

Dynamics and tone

6
  • Compressor
  • Noise Gate
  • Transient Shaper
  • 5-Band EQ
  • Stereo Widener
  • GCB-95 Wah

Modulation

16
  • Chorus
  • Flanger
  • Rotary
  • Vibe
  • Phaser
  • Vintage Trem
  • Poly Octave
  • Pattern Trem
  • Auto Swell
  • Filter
  • Ladder Sweep
  • Formant
  • Quadrature
  • Destroyer
  • Whammy
  • Harmonizer

Delay

10
  • Digital
  • Tape
  • Dual
  • Filter
  • Lo-fi
  • Bucket Brigade
  • Duck
  • Pattern
  • Swell
  • Tremolo

Reverb

13
  • Convolution
  • Room
  • Hall
  • Plate
  • Spring
  • Bloom
  • Cloud
  • Shimmer
  • Chorale
  • Nonlinear
  • Swell
  • Magneto
  • Reflections
Open the effects reference

Every layer is open.

The DSP engine, the touch UI, the preset format, the enclosure files, and the firmware image are MIT-licensed. Build it, change it, and send your changes back.

  • DSP engine
  • Touch UI
  • Manager
  • Presets
  • Enclosure
  • Firmware image
View on GitHubRead the build guide