Polyvection · Labs

Small-batch hardware
from the bench.

The DIY arm of Polyvection. We design and ship the kit we wish existed: standalone bridges between vintage gear and modern streaming, retrofits for systems that nobody else still supports, embedded experiments. Engineered in-house at our workshop in Stahnsdorf, Germany. Sold direct, in small batches, with the firmware open.

01 Designed in-house 02 Made in Germany 03 Open firmware 04 Direct from the bench

Currently shipping one product.

More on the bench · 2026
MasterDataTool MDTv2 — 3D-rendered preview of the PCB showing the RJ45 and DIN connectors
Pre-order · May 2026

MasterDataTool

MDTv2 · Raspberry Pi HAT

Bridge vintage Bang & Olufsen audio systems to modern streaming. Talks the original MasterLink and DataLink wire protocols natively, exposes them as plain serial messages a Raspberry Pi can read and write directly. Designed for the BeoSound 9000s, BeoLab 3500s and BeoGram 4004s of this world.

MasterLink + DataLink wire-level bridge Onboard MCU, plain serial interface Raspberry Pi 2 / 3 / 4 / 5 compatible 3D-printed housing & ML→RJ45 adapter included
Read more  →
// In development
In progress

More on the bench

unannounced

New hardware is in active development. Same philosophy as everything else here: small batches, designed in-house, documented deeply, firmware in the open. Details when it's close to ready.

Designed and built in Germany Sold direct, no distributors Open firmware, plain documentation

What is Polyvection Labs?

Polyvection is a small embedded-hardware studio in Brandenburg, Germany. Our day job is contract engineering for companies that need Linux running on hardware nobody has built yet. Polyvection Labs is the side of the bench where we ship our own gear.

The Labs catalogue is intentionally narrow: products we use ourselves, problems we wanted solved, hardware that's hard to justify as a million-unit consumer product but very justified as a 100-unit small batch. We sell direct, document deeply, and keep the firmware open.

For B2B engineering services and contract work, see the main polyvection.com. For Labs hardware — this site. To talk to a human, email info@polyvection.com.

● LABS.ONLINE POLYVECTION · LABS MDTv2 · PRE-ORDER
LAT · BERLIN/DE --:--:--