Bastl’s Kastle 2 and Citadel Eurorack are now DIY kits, open source platforms

It started with Kastle 2, Bastl Instruments’ cute and clever handheld. It could be a multi-effect, a sample player, a synth. Then Citadel modules came along and did those things in Eurorack. Now, Bastl’s got a surprise: you can buy these as DIY kits, and a big chunk of the Raspberry Pi-powered platforms are being released as open source. Here are all the details.

Stylophone Voice, AA-powered sound-bending sampler + sequencer + FX

Oh yeah, somebody remembered to make stuff that’s just fun. Stylophone (Dubreq) is adding to its Pocket Range with an AA battery-powered device that samples, sequences, and adds effects. That puts your sounds under the signature Stylophone stylus — and it looks set to be a breakout hit, if the price is right.

Peter Kirn - January 19, 2026

What’s new in the DIY world of Music Thing’s Workshop System

It’s a Very Workshop System Jamuary. Music Thing’s patchable music lab-in-a-lunchbox has proved that small-batch personal hardware can attract a select, dedicated community sharing great stuff with one another. Let’s catch up with what’s been happening in that magical village of synth wonder in the past year. Don’t forget, the ideas and code here are all open — meaning this could inspire more.

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