Kastle Handheld Modular Synthesizer (v1.5)

BASTL Kastle v1.5

The Kastle is a compact modular synthesizer that can be powered with batteries or via USB. It emits distinct modulations and inherently intricate sounds. It can be used in a self-contained manner or integrated into a larger setup. v1.5 consists of a complex oscillator and an LFO with a stepped waveform generator.

Kastle v1.5 Features

• Complex oscillator
• 3 synthesis modes on the main output: phase modulation, noise mode, track & hold modulation
• 3 more modes on the secondary OSC output: phase distortion, tonal noise mode, formant synthesis
• PITCH control with offset and CV input with attenuator
• TIMBRE control with offset and CV input with attenuator
• WAVESHAPE control with offset and CV input
• Voltage controllable LFO with triangle and square outputs and reset input
• 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
• Possibility of exchanging different LFO and OSC chips
• Durable black & silver PCB enclosure