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Bastl Kastle Drum Synthesizer (Discontinued and Rare) - $150 (Wheaton)
county farm road near geneva
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The Kastle Drum is a special edition of Bastl’s classic mini modular synth focusing on algorithmic industrial glitchy drums.
Drum sound synthesis with a unique dynamic acceleration charged envelope makes this rhythm box surprisingly versatile and extremely fun to play. The built-in VC clock generator with a stepped pattern sequencer can either run on its own or it can be synchronized to analog clock, while retaining the triangle LFO for parameter modulation.
The Kastle Drum is a mini modular synthesizer with a headphone output, 2 in/out ports for interfacing other gear, and it runs on just 3 AA batteries. It is ideal for beginners in modular synthesis, but it will add some quite unique functionality to any modular synthesizer system. It delivers the fun of modular synthesis at a low price and fits into your pocket so you can play it anywhere!
Kastle is an open source project with all resources obtainable from GitHub. Given that anyone can do anything with the code, we cannot provide any support for user upgrades from Kastle v1.5. All information is easy to find online for curious users, but please understand that we do not have the capacity to help you with that process.
Features
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 5V USB power selectable by a switch
open source
durable black & gold PCB enclosure