jumango made a synth you can tuck in so it goes to sleep

Soundmaking and music can fill you with energy, so much so that you might miss out on the importance of a good night’s sleep. jumango has engineered a solution: tuck this DIY synth into a blanket, and it falls asleep.

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.

Peter Kirn - January 21, 2026

Airwindows VerbThic, VerbTiny let you go even more rabid for reverb, for free

Chris Johnson, aka Airwindows, continues to share his love for DSP with free tools, open source code, and elaborate discussions of the joy of crafting reverbs. So just in case you don’t feel blessed enough with free effects after SuperMassive’s new Sirius reverb/delay, here’s the tiny and the thick in all-new Airwindows editions. And they’ll even run in VCV Rack or on a Raspberry Pi.

Peter Kirn - December 3, 2025