Mk1 · prototype season · summer '26

MOSTIK
Mk1.

A compact Wi-Fi speaker I'm building in Prague. Birch plywood, aluminium, one knob.

MOSTIK is meant to sit on a shelf and become part of the room. Roon, AirPlay, Lyrion and Bluetooth are available as sources. Setup runs locally in a browser page served by the speaker itself. Mk1 is the first version. The enclosure is final in CAD; I'm CNC-cutting and assembling the first measured prototype this summer.

Follow the build See current status
Status
CAD locked
First unit
Summer 2026
Built by
1 human
MOSTIK Mk1 speaker with construction lines visible
Mk1 · 001/100 birch · aluminium · pi
Now playing
Roon · 24/96 · living room
01 — Object

Something you put on
a shelf and forget is a computer.

MOSTIK is for people who already have a music setup they care about and want a Wi-Fi speaker that belongs in a room. Birch and aluminium on the outside. Real, named components inside. One knob you actually use.

What it is

A stereo Wi-Fi
speaker, shelf-sized.

For home listening. Roon, AirPlay, Lyrion and Bluetooth as sources. About the size of a small bookshelf speaker.

Who it's for

Roon households.
Design-minded listeners.

People who want physical controls, visible materials, and a device that feels at home near books and records.

The look

Closer to furniture
than a gadget.

Low and compact. Visible birch grain, sandblasted aluminium back panel, one knob, one LED.

≈ 430 × 152 × 200 mm

The long view

A speaker that
stays useful.

Mk1 starts a numbered series. The enclosure can be opened, parts can be replaced, and core software runs locally on the speaker.

Try the knob

One control,
that's the whole UI.

42
drag to adjust · volume
02 — Current status

The design is final in CAD.
The first physical build is next.

The Mk1 enclosure is being finalized in Fusion 360. After that comes CNC-milled birch plywood, laser-cut interior baffles, and the sandblasted aluminium back panel. The hardware stack is settled and mocked up on the bench. Sound and measurements come after the first physical build.

Live render · case front 02 MOSTIK Mk1 construction render

End to end

Done, next, and roughly when.

Enclosure design (Fusion)
done
Reference hardware stack on the bench
done
Source compatibility on the bench
done
First CNC build + acoustic measurement
summer '26
CamillaDSP tuning + real photography
after build
03 — Build

Birch. Aluminium.
Parts you can name.

Every component is chosen for a reason and can be replaced. The cabinet is assembled with service in mind. A failed driver can be swapped with hand tools. Inside: compute board, amp board, drivers, PSU, knob controller. The construction itself is part of the look.

Cabinet
12 mm Baltic birchCNC milled · natural oil · visible grain
Back panel
3 mm sandblasted aluminiumLaser cut · custom per series
Drivers
Dayton Audio RS100-4Two full-range · separate chambers · bass-reflex tuned
Compute
Raspberry Pi CM4RoPieee today · dedicated MOSTIK image follows
Amp + PSU
HiFiBerry Amp2 + MeanwellFamiliar names in pro-audio racks
The knob
Pi Pico + rotary encoderSystem-level USB HID volume control
04 — Sources & Control

Roon first.
Everything else built around it.

MOSTIK appears on your network as a Roon endpoint. AirPlay, Lyrion and Bluetooth are available for guests, phones, and other libraries. Setup, naming and status live in a browser page served by the speaker itself.

Primary

Roon

The main path. RoPieee runs today; Roon Ready certification is the Mk1 target. It should behave as a stable, named zone in your Roon setup.

Apple network

AirPlay

For casual playback from a phone or laptop on the same network. Works for guests.

LMS

Lyrion

For people with an existing Lyrion (Logitech Media Server) library.

Wireless

Bluetooth

Local fallback for moments when network audio is unavailable.

mostik.local — setup & status ↔ drag to scroll
MOSTIK local browser interface preview
05 — Plan

From CAD to a
measured speaker.

Organized by months. Some tasks overlap on purpose — software and hardware run in parallel.

Done
01
Finalize the design
Jan – May 2026
Lock the enclosure in Fusion: proportions, front face, back panel, internal layout, materials, BOM.
Now
02
Software and control
Feb – Jun 2026
Browser interface, naming, source handling, knob behavior. Roon Ready certification work belongs in this window.
Next
03
First built prototype
Jun – Jul 2026
CNC the wood, laser the baffles and back panel, assemble the first complete unit.
Then
04
Measure, tune, photograph
Jul – Aug 2026
Acoustic measurements, CamillaDSP correction, real photos replacing renders.
Launch
05
First numbered series
Aug – Sep 2026
Open the first series for orders. Small early run, numbered units, Mk1 as the start of the line.
06 — FAQ

Useful
details.

A few honest answers for people thinking about MOSTIK as an audio device, a room object, and something they might actually buy.

What stage is MOSTIK Mk1 in? +
Final design in Fusion. Hardware mocked up on the bench. Software in active build. The next public milestone is the first CNC'd, measured, photographed prototype — coming in summer 2026.
How does daily control work? +
One knob on the front for volume and transport. Setup, source visibility, and naming use a browser page served by the speaker.
Is it Roon Ready? +
Roon endpoint support runs today via RoPieee — the same way many Roon users already run their Pi-based bridges. Roon Ready certification is the target for Mk1.
Who's behind this? +
One person. I make films for a living. MOSTIK started as a Roon endpoint I wanted for my own apartment and turned into something I want other people to have. Every unit will leave Prague signed, numbered, and tested by me.
Why so serviceable? +
A speaker that lives near books and records should outlast its first chip. The cabinet opens, parts are replaceable, and local software keeps the core functions accessible.
When can I buy one? +
The first numbered series is planned to open in late summer 2026, after the first prototype is measured and validated. The waitlist below is for notification; the shop opens later.
07 — Prototype list

Be there when
the first one is built.

Summer 2026: first measured prototype, real photos, listening demos. Late summer: the first numbered series opens. Updates go out when there is something real to show — photos of the first build, measurements, sound demos, and the opening of the first series. Every note is written by me.

General curiosity Roon / network audio Design & interiors Open / DIY audio
Occasional updates only, tied to real build progress.