Introducing Arpeggio.
The first dedicated arpeggiator, sequencer, and synth
in one portable device. A simple instrument
for composing, saving, and performing melodies.


Meet Arpeggio: the portable arpeggiator, sequencer, and synth.

Arpeggio is an instrument focused on letting you easily create, save, and perform melodies. It is inspired in part by the idea of an arpeggiator, a feature found on some synthesizers which instantly creates looping sequences of notes selected from the keyboard in real time. We expanded on this concept and created a completely new musical instrument designed to give you the freedom to create melodies with nuance and distinction.

Improvise, compose, create.

The notes you select from the one octave keyboard instantly create a looping sequence. Unlike a step sequencer, Arpeggio does not limit you to a set number of notes in your sequence. Add rests into your melody and adjust note lengths, tempo, octave, portamento, and swing. Save your melodic phrases as they are created into one of 512 memory banks. They can be chained together to create more complex melodies.

Arpeggio anywhere.

It’s equally at home on stage, in the studio, or on the couch. With an editable 2-oscillator virtual analog synthesizer, a built-in speaker, and battery power, Arpeggio can help you make melodies wherever inspiration strikes.

There are no screens or menus. All controls are at your fingertips with an interface so simple you can let your intuition take over.

Plays well with others.

Arpeggio is an amazing instrument all on its own, but its expansive I/O makes it a powerful companion for your other electronic instruments. Add an arpeggiator to any synth. Connect a larger external MIDI keyboard and record a full chord’s worth of notes into arpeggio instantly. Expand your sonic palette by using it as a sequencer to control other synthesizers and sound modules. Sync it up to external clock sources for integration with drum machines, samplers, iOS devices and computers. 

  • Internal 2-oscillator virtual analog monophonic synth with 24 synth patches
  • Create and save melodies seamlessly during play
  • Classic up, up-down, down, down-up, as played, & reverse arpeggiator modes
  • Chain together up to 512 user created melodies
  • Copy, paste, & delete melodies
  • SD card to save melodies & synth patches
  • Adjust note lengths and add rests into your melodies
  • Control external hardware and software synths
  • 1/4″ instrument & 1/8″ headphone audio outputs
  • MIDI in/out over DIN, USB, & Bluetooth
  • 1/8″ 0-5v volt-per-octave control voltage & gate outputs
  • 1/8″ sync jack switchable between output & input at either 2 or 24 ppq
  • High quality internal speaker
  • USB or battery powered – Make melodies anywhere!


Instant looping sequences. Up, up-down, down, down-up, sequence (as played), reverse styles. Hold (Latch) can be turned on or off. The play button starts and stops Arpeggio.


Sequences are created and saved on the fly. You can create a sequence and then save it to a bank while it’s playing. Sequences are monophonic and can be up to 128 notes long. Individual steps in a sequence can be of different note lengths, and gate lengths. Like an arpeggiator the sequence length expands as notes are added. You can link melodic sequences together, add rest notes, and delete notes all in real time. Attach the advanced sequencing overlay and scrub through your sequence to delete or insert notes, add slides, and adjust swing to create the exact melody in your head.


A monophonic virtual analog synthesizer. Turn the voice knob to cycle through 24 different synth patches and adjust shape, attack, and portamento. Synth features include: dual oscillators, dual ADSR Envelopes, dual LFOs, six oscillator waveforms, low-pass filter & detune. Dive deeper using the synthesizer overlay and completely customize all synth parameters, create and save your own sounds.


A one octave keyboard from low C to a high B is where you’ll play the notes to create your own melodic sequences. Turn the octave knob to shift the pitch of the keyboard up and down to play any note you want. Notes may also be input using an external MIDI controller.


You get 512 banks to save and instantly access user created sequences. Sequences can be chained together for seamless experimentation and composition. These 512 sequence banks are organized into 3 tiered levels (sets, songs, sequences) each with 8 banks. From the top down there are 8 sets, each set contains 8 songs, each song contains 8 sequences. Sets, Songs, Sequences can also be copied, pasted, and deleted.


In transpose mode the currently playing sequence can be shifted up and down by either selecting a note from the built in one octave keyboard, a whole octave by turning the octave knob or by playing a note on an external MIDI controller. The melody will be shifted up by the number of steps the selected key is away from the low C.

SD Card

All user created sequences and synth patches are saved to the SD card and can be easily backed up by copying the contents to your computer. Firmware updates are simple: just copy new versions to the SD card and they will be automatically installed when Arpeggio is turned on.

I/O Bridge

Use Arpeggio as an input / output bridge. Arpeggio sends and receives MIDI over DIN, USB, and Bluetooth LE, and it also sends Control Voltage / Gate signals. This means you can use Arpeggio to wirelessly connect synth apps on your computer or mobile device to your wired MIDI controller. You can also control your modular / vintage synths using CV /Gate over bluetooth from your computer or mobile device. Numerous input / output combinations are possible.