MSW-820 offers dual AS3340 VCOs, 16-mode filter and Eurorack I/O for $499

Michigan Synth Works revealed the MSW-820, a compact analog monophonic synthesizer built as a hands-on voice that can live on the desktop or drop into a Eurorack rig. The design pairs two AS3340-based VCOs with a 16-mode voltage controlled filter derived from AS3109 designs, bringing unusual filtering flexibility and classic VCO character to an accessible $499 suggested price.

The heart of the MSW-820 is its dual oscillator section: each VCO offers saw and pulse waveforms with pulse-width modulation, giving immediate classic analog textures and thick unison-style timbres when detuned. The 16-mode filter is the headline feature for modular-minded players, covering lowpass, highpass, bandpass and allpass modes among its options and allowing tonal shifts that go far beyond a single-slope ladder or state-variable voice. That filter architecture should open up new routing and feedback effects for patch cable-centric setups.

Modulation on the MSW-820 is flexible. The instrument provides two envelopes alongside a digital LFO that can be synced or triggerable and offers multiple LFO shapes, which expands performance potential without forcing users into menu dives. An 8-flavor digital noise source adds texture options for percussion, wind-like tones and lo-fi seasoning. Extensive CV I-O rounds out the feature set: TRS MIDI and USB are included for modern connectivity, while Eurorack-friendly connections let the MSW-820 function as both a desktop instrument and a modular voice.

Michigan Synth Works published a full specification and feature list with the announcement and set a suggested retail of $499, with availability anticipated later in January 2026. That price point places the MSW-820 in a competitive segment where buyers weigh fully featured analog voices against compact modules and boutique monos. For players chasing GAS, the combination of an AS3340-based oscillator pair and a 16-mode AS3109-derived filter at this price will be hard to ignore.

The practical value is straightforward: the MSW-820 supplies a single, flexible analog voice that integrates directly into existing setups without large racks or expensive converters. Live performers can use it as a compact desktop rig, while modular builders can patch it into a case for immediate modulation and CV experimentation. Producers looking for a distinctive monosynth flavor get a strong modulation toolkit and a broad filter palette for sculpting sounds.

Expect the MSW-820 to show up in rigs and racks soon; with its blend of vintage-leaning VCOs, modern filter modes and Eurorack readiness, it is poised to become a practical add for anyone seeking a versatile mono voice without breaking the bank.