Bastl Instruments - Kastle Drum

Kastle from Bastl Instruments is a mini modular synthesizer which runs on 3 AA batteries. It delivers the fun of modular synthesis at a low cost and fits into your pocket so you can play it everywhere! It has a unique digital lo-fi sound and it can be melodic as well as very noisy and drony, soft or harsh. It is designed to be fun on its own but it is most powerful when combined with other modular gear. The new v1.5 version combines a complex oscillator and LFO with stepped waveform generator.

Kastle Drum is the third version of the Bastle Kastle and is a completely new instrument with eight different drum synthesis modes and a peculiar sequencer. The small Drum Kastle can receive or output a clock to run in sync with other devices. Thanks to its size and the possibility to run it with three AA batteries, it fits very well into different small setups or a treehouse rave. Ten small patch cables are included.

    8 drum synthesis styles
    ”noises” output for less tonal content
    DRUM selects drum sounds
    acceleration charge dynamic envelope
    decay time
    PITCH control with offset and CV input with attenuator
    voltage-controllable clock with square and triangle output
    stepped voltage generator with random, 8 step and 16 step loop mode
    2 I/O CV ports that can be routed to any patch point
    the main output can drive headphones
    3x AA battery operation or USB power selectable by a switch
    open source
    durable black & gold PCB enclosure