Bastl’s new Déjà vu is the 4HP module for when you need to fader stuff

This looks like a good case of what happens when a simple idea does a ton of stuff — the opposite of a unitasker. Two faders, but there’s attenuator, attenuverter, crossfader, preamp, line level booster, panner, mixer, and and and…

Basil stereo delay completes Bastl’s PIZZA trio on VCV Rack — all for free

The freeware VCV Rack ports of Bastl’s delicious PIZZA family now include the original Pizza oscillator, Crust drum/percussive voice, and Basil stereo delay. Endless patching pleasures await with these (and don’t forget the free and open source KOMPAS “probability navigator,” too).

Peter Kirn - February 22, 2026

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

Bastl Instruments’ budget, handheld boxes are pure magic; new videos

Peter Kirn - May 12, 2025

Bastl Instruments Crust drum voice is free in VCV Rack, too

Peter Kirn - November 5, 2024

Bastl’s new Neo Trinity module: 6-channel modulation with recording

Peter Kirn - January 29, 2024

Bastl – Casper Aikido module is a mixer and a quad VCA and a compressor envelope follower

Peter Kirn - February 8, 2023

Bastl adds extra toppings to Pizza wave-shaping, FM oscillator

Peter Kirn - November 18, 2022

BASTL Microgranny is back – in a limited Monolith edition with Bogdan Raczynski

Peter Kirn - October 14, 2022