Bastl Instruments Introduces Kastle 2 Alchemist Hybrid-Synthesis Instrument
Today, Bastl Instruments has introduced the Kastle 2 Alchemist – a compact, patchable, hybrid-synthesis monophonic synthesizer.
The Kastle 2 Alchemist is the spiritual successor to the original Kastle Synth, which was introduced in the fall of 2016 and later updated to Kastle 1.5 in 2017. It also inherits DNA from the Kastle Arp from 2023.
The Alchemist offers a range of Bastl-brewed Synth Modes – Filter, FM, Supersaw, Hypersine, and GlitchNoise – which can be combined with its internal effects and a versatile Pattern Generator. Rhythms and scales are fully customizable via the web-based app, and expanded MIDI USB compatibility adds even more flexibility.

The Kastle 2 Alchemist is the third firmware release for the Kastle 2 hardware platform, joining the FX Wizard multi-effects processor and the Wave Bard stereo sample player. The firmware is fully cross-compatible across all devices in the Kastle 2 Series – meaning the Alchemist firmware can be loaded onto previous Kastle 2 units and Citadel modules, and vice versa.
Here’s a no-talk, all sounds demo of the Alchemist:
The Kastle 2 Alchemist is available now for €160 ex. VAT























