Similar Listings

Price Drop
MSW-810 Analog Monosynth
Brand New
Haslett, MI, United States
Originally $450, now $400 ($50 price drop)
Michigan Synthworks MSW-810
Used – Excellent
Green Bay, WI, United States
Haslett, MI, United States
Originally $475, now $450 ($25 price drop)
Haslett, MI, United States
Haslett, MI, United States
Camarillo, CA, United States
Haslett, MI, United States
Portland, OR, United States
Haslett, MI, United States
Jefferson, GA, United States
Originally $329, now $310 ($19 price drop)

This is the white prototype that I took to shows with me, i have more than i need so here it is for sale

MSW-810 Analog Monosynth with TB-303 Sequencer. 

Fully assembled and Calibrated.

The MSW-810 is a faithful recreation of the CMU-810 Monosynth which was designed as a synth expander for the 1983 CMU-800 computer music production system. At its core however, is the tone generator of the MC-202.  

The MSW-810 pairs this synth voice with the legendary TB-303 sequencer Pixie emulation that runs the original TB-303 mask ROM code and also adds MIDI control (note and sync).  Accent is added on the rear panel and features accent in via 3.5mm jack and Accent amount.  Since the CMU-810 did not have accent as a feature, the 202 accent circuit was added as a mod.



AS3340 Based
Range: 16'/8'/4'/2'
Pulse Width Modulation: 50% to Min
PWM Mode: ENV/Manual/LFO
Modulation Depth

Sound Mixer 

Level Control Sliders: Square, Saw, Sub-OSC, Noise
Sub-OSC Waveforms: 1 oct down, 2 oct down, 2 oct down PWM


AS3109 Based
Cutoff Frequency: 10Hz to 20kHz
Resonance: 0- Self Oscillation
ENV Depth
Modulation Depth
CV Follow: 0-100%


Gate or Envelope


Attack time: 1.5 ms to 2 s
Decay time: 2 ms to 10 s
Sustain Level: 0-100%
Release Time: 2 ms to 10 s


Rate: 0.1Hz to 20 kHz
Delay Time: 20 ms to 0.7s
Rate Indicator

VCA + Mixer

Level Control Sliders: Synthesizer, Input 1, Input 2, Output
VCA Bypass Switch
VCA Response: Lin/Exp


Synth CV in: 1V/Oct, 0-7V, 3.5mm TS 
Synth Gate in: 0-12V, On>2.5V, 3.5mm TS
VCA CV In: Lin 0.83 to 5V, Exp 0.83-4.58V, 3.5mm TS
Input 1: Unbalanced 1/4" TS
Input 2: Unbalanced 1/4" TS
Synth Out: Max -6 dBm, Unbalanced 1/4" TS
Mix Out: Max -10 dBm, Unbalanced 1/4" TS
Headphone Out: Stereo, 9-150 ohm, 3.5mm TRS
Accent In: 0-5V, 3.5mm TS


9V DC, 500 mA, Tip positive.  120-240V Included



Includes: 1.5m TRS MIDI cable, universal power supply, MSW-810S Synthesizer

Reverb Buyer Protection

Reverb has your back if your item is lost, damaged, or doesn't match its description. Simply report any issues within 7 days and we'll help you get a full refund.Learn more about Reverb Buyer Protection.

Listed2 months ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
  • MSW-810S Synth with Sequencer
  • White
  • 2020

Michigan Synth Works

Haslett, MI, United States
Joined Reverb:2015

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Carbon-Offset Shipping

Your purchases also help protect forests, including trees traditionally used to make instruments.

Oops, looks like you forgot something. Please check the fields highlighted in red.