Casper Electronics’ Drone Lab is a 4-voice analog drone synth, rhythm generator and FX processor, sold as a kit or in finished form.
It is capable of generating rich, textured soundscapes, hypnotic drones and complex rhythmic sequences. It features a series of filter and distortions circuits as well as an audio input jack. This allows it to be used as an effects processor for external audio signals.
Casper Electronics has shared this collection of audio demos, below, that feature the Drone Lab v2, which is available at their site.