MICRO GROOVEBOX • OPEN HARDWARE • FOCUSED WORKFLOW

More Flow.
More Music.

RHYTHM is a compact groovebox designed to help ideas arrive faster. It favors direct control, quick pattern building, and thoughtful creative limits so you spend less time configuring and more time making something worth keeping.

A moody electronic music production setup with modern gear and dramatic lighting.

From Software to Hardware

Placeholder monochrome technical drawing style image for the RHYTHM story section.

RHYTHM comes from a long history of audio projects.

Back in 2005, we created PSP Rhythm, a music sequencer that built a small but loyal following and introduced the core workflow ideas that would eventually shape RHYTHM.

When Apple opened its SDK in 2008, we moved to that platform and built BTBX, Rhythm Studio, Modular, and other audio apps. Each project pushed those ideas further, but the larger goal never went away: to create a real hardware instrument that felt immediate and focused.

After years of experimentation, design work, and learning how to move from software into the physical world of electronics, RHYTHM was born — a compact groovebox built to turn that history into something tactile, musical, and real.

RHYTHM is built around thoughtful limitations, not feature bloat.

Plenty of devices can do everything. Very few make you want to keep going. RHYTHM aims for a better balance: enough power to build compelling grooves, enough restraint to keep the process fast, musical, and satisfying.

Fast Pattern Creation

Create and evolve loops quickly so ideas stay alive while they still feel exciting.

Tactile by Design

Physical interaction comes first, helping the instrument feel expressive instead of abstract.

Readable Interface

Strong contrast and clear visual structure keep your attention on music, not on deciphering screens.

Creative Constraints

Good limitations don’t block ideas — they shape them into something stronger and more memorable.

From sketch to groove without losing the thread.

RHYTHM is meant for the part of music-making that matters most: the moment an idea first lands. Its job is to help you catch that idea, shape it quickly, and stay in motion long enough to turn it into a real pattern, a real track, or the seed of something larger.

  • Optimized for hands-on beat construction
  • Made for repeatable creative flow, not endless option paralysis
  • You can go as far down the rabbit hole as you would like to go with parameter locks or keep it quick and fast
  • Compact enough for a busy workspace, strong enough for serious sessions
Close-up of electronic audio gear with dramatic neon lighting.

Features

  • 8 Tracks, 16 Patterns, 64 Samples
  • Up to 64 Steps per Track Patterns
  • 256 Step Song Sequence
  • 32 Voice Polyphony
  • Per Track Swing
  • 4 Engines: MONO, POLY, SYNTH and MIDI
  • Grid and Step Sequencer with Parameter Locks
  • Mixer, Track Effects, Send Effects and Reverb
  • Oscilloscope with Trigger, Sine Wave and Frequency Detect

Specifications

  • 24bit Audio, 48k Sampling Rate
  • Stereo Audio Input and Output
  • Midi Input and Output
  • 2.42" OLED Display 128x64
  • Rotary Encoder
  • Low Profile MX switches
  • 64mb RAM (58mb usable for samples)
  • 480Mhz CPU
  • Micro SD Card

Guides, manuals, and tutorials.

RHYTHM documentation is intended to grow alongside the instrument, from first-use quick starts to deeper workflow guides, full reference material, and video-based help.

Collaborate with other musicians, makers and early supporters.

RHYTHM is meant to grow with a real community around it — a place where musicians, makers, and early supporters can share ideas, compare workflows, offer feedback, and help shape what comes next.

Web Firmware Flash Utility and SD Card Image

Use the Web Firmware Flash Utility to update the software on your groovebox. Download and load the SD Card Image with samples and demo songs.