Made to feel timeless
Warm ivory, purposeful proportions, and unmistakably physical controls. Every detail is inspired by the optimism of personal electronics in the eighties — without pretending to be a lost historical product.
Independent retro audio concept · 2026Portable music.
Portable music.
Personal
choice.
What if personal music had taken a different path in 1988? Meet CS-84: an imagined icon of the cassette era, re-engineered today with tactile controls, an elegantly simple display, and music at its heart.
An independent design and engineering project. Product imagery is conceptual; a finished physical prototype has not yet been built.
CS-84Product designation
Zero 2 WRaspberry Pi core
2.42″Monochrome display
3D PrintPrototype enclosure
01 / ConceptThe player that never was.
The player that never was.
The project that now is.
Born from a playful question — what might a personal music player have looked like in 1988? — CS-84 brings that alternate history to life through original industrial design, purpose-built software, and an evolving hardware prototype.
Feel every selection
Turn the substantial selection wheel. Press SELECT. Tap PLAY. CS-84 brings the joy of hands-on interaction back to listening.
Just you and the music
A crisp monochrome interface makes albums, tracks and playback status easy to find. No feeds, no pop-ups — only your own music library.
02 / TechnologyAn old-school feeling.
An old-school feeling.
A modern heartbeat.
The experience is intentionally simple; the technology behind it is anything but vintage. Raspberry Pi hardware and custom CS-84 OS bring modern digital audio to an unmistakably retro design.
Main controllerRaspberry Pi Zero 2 W
Display2.42" monochrome module
AudioI²S DAC + 3.5 mm output
Enclosure revisionApprox. 94 × 155 × 33 mm
Media storagemicroSD library
Operating systemCS-84 OS 1.0
Engineering note: enclosure fit, wheel mechanics, battery safety and hardware integration remain under development.
03 / Development statusImagined yesterday.
Imagined yesterday.
to a working prototype.
The first chapter is digital: design, software and simulation. The next is physical — turning a striking idea into a working object you can hold.
PHASE 01 · COMPLETED
Concept definition
The story, silhouette, controls and identity of CS-84 take shape.
PHASE 02 · COMPLETED
Digital development
Early CAD, CS-84 OS, a browser simulator and engineering records are prepared.
PHASE 03 · NEXT
Physical prototype
Refine the enclosure, selection wheel and power architecture, then print and assemble.
PHASE 04 · NEXT
Bring-up & testing
Test the sound, battery, controls and software on real hardware.
04 / DownloadsA concept worth building.
A concept worth building.
Real deliverables.
Step inside the CS-84 project: explore the interactive simulator, browse the engineering documents, and follow the path from concept to first prototype. These are development materials, not production-ready specifications.