K-2 MK II Semi-Modular Analog Synthesizer

Inspired by the raw, experimental vibe of the classic Korg MS-20, this synth delivers that same snarling analog attitude with a fresh twist—oscillator sync and FM capabilities that push its sound design into bold new territory.

Dual VCOs offer triangle, reverse-sawtooth, square, narrow pulse, and variable pulse width shapes across a six-octave range, complete with ring modulation and a dedicated mixer for blending. Iconic JFET-based highpass/lowpass filters with peak/resonance bring aggressive bite, shaped by two analog envelope generators—one for filter, one for amp—plus a triangle/square LFO for movement. Hands-on control comes via 36 knobs on its white-on-black panel, with semi-modular patching through 32 CV points including new PWM input on VCO1, 1V/oct CV for both oscillators, envelope CV out, and trigger in. It's desktop-ready or Eurorack mountable, with mono audio I/O, USB/DIN MIDI, arpeggiator, sequencer, 128 presets, and Poly Chain for up to 16-voice polyphony.

Players digging the MKI love how these upgrades—like sync and FM—unlock fatter, more versatile tones without losing the MS-20's quirky charm, though some note the build feels typically Behringer—solid value, not boutique.