Knobcon 2026: Michigan Synth Works MSW-820S is a new analog mono synth based on the MSW-820 with an added TB-303-style sequencer.
Last November, Michigan Synth Works introduced the MSW-820, a dual-VCO analog synth with a 16-mode filter. For me, one of the most exciting compact mono analog synths of recent years. I
like the interface, with its mix of knobs and faders and 16 filter modes, which give it great versatility. This weekend is Knobcon 14 or 2026, and Michigan Synth Works is showing the MSW-820S—the synth plus TB-303-style sequencer.
Michigan Synth Works MSW-820S
The MSW-820S is a new two-VCO analog mono Synthesizer. Like the Michigan Synth Works MSW-820, the new 820S is based on the analog section of the MSW-830, which in turn is based on the Roland CMU-10 from 1983.
The interface features the same highly hands-on design, with plenty of knobs and faders that make it great for performing.
At the core are two VCOs, each with selectable saw and pulse waveforms with a fader. Each oscillator has a switchable range between 4′-16′, a tune control, two-mode sync, and PWM with an adjustable amount on a fader.
On oscillator 2, you can also choose the modulation source for the PWM: MAN, LFO, and mod envelope. Additionally, you can route modulation instantly to the oscillator, either envelope mod (OSC1) or LFO (OSC2)
In the dedicated mixer section, you can mix both oscillators together, add a 1/-2 sub-oscillator, and work with noise. You can also bring in external audio.
A big highlight is the filter section, with 16 analog filter modes based on the 3109 OTA chip used in classic Roland synths (SH-101, MC-202, Jupiter-8…).
These available modes are split into two categories:
- (A) 24dB LPF, 12dB LPF, 12dB HPF + 6dB LPF A, 18dB HPF + 6dB LPF, 24dB BPF, 12dB BPF, 12dB Notch + 6dB LPF, and 18dB Allpass (phase) + 6dB LPF
- (B) 18dB LPF, 6dB LPF, 12dB HPF, 18dB HPF, 12dB HPF + 6dB LPF B, 6dB HPF, 12dB Notch, and 18dB Allpass (phase)
It has the same parameters as the MSW-820, plus a new addition. With a TB-303 sequencer, it now has a built-in, switchable two-level accent and adjustable portamento. Accent is also available in the filter mod section.
Modulation
The modulation section features two ADSR envelopes (mod and amp), adjustable with individual faders, and a single multi-wave
Modulation is classic. It has two ADSR envelopes (mod, and amp), adjustable with individual faders, and a single multi-wave two-mode LFO with shape and fade functionality.
Then, you have an output section with an external input control and an added pot that lets you control it either with the mod envelope mod or envelope CV2
Sequencer
The final ‘S’ in the name MSW-820S stands for “sequencer,” which Michigan Synth Works derived from their open-source TB-303 firmware SuperOS-303.
It features all the best-known functions of the original Roland TB-303 but also comes with plenty of modern additions like web editor, richer pattern editing (undo, redo, state resets…), nudge, randomize, scale locking, and more.
You can also find advanced sequencer controls like pattern length modification, playback direction, triplet modes, and more.
The connectivity is on the back, and it’s extensive: USB-C for power, in sockets for run, sync24, TRS-mini MIDI IN, clock, gate, v/oct, two external CV outputs, audio input, and main out.
First Impression
The MSW-820 is a great little compact Synthesizer. The additional version with a bassline sequencer makes sense, since the synth is designed for bassy and lead sounds.
Schneidersladen is offering the MSW-820 for 529€. There’s no price yet for the S version, but I’d guess it might be around 700€. Who knows?
Michigan Synth Works MSW-820S availability and price TBA.
More information here: Michigan Synth Works
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