Coming Janurary 2026
MSW-820 is a 2 oscillator based analogue monosynth with an advanced 16 mode voltage controlled filter, 2 envelope generators, digital LFO with sync and trigger functions, digital noise source with 8 flavors, MIDI (TRS or USB), all in a compact desktop or euro format.
Specifications:
VCOs
- AS3340 Based, Pulse and Sawtooth Waveforms
- ENV Modulation (OSC1) and LFO Modulation (OSC2)
- Range: 16'/8'/4', 7 Octaves
- Pulse Width Modulation: 50% to Min
- PWM Mode: ENV/Manual/LFO Modulation
- Master and OSC2 (offset) Tune Control
- Pulse/Sawtooth Mixer control per Oscillator
- 2 Hard Sync Modes: O2 Track Pitch or O2 Do not track pitch
- 2 Reset Modes: Reset O1 on gate or Reset O1 and O2 on gate
Sound Mixer
- External Input (pre filter)OSC 1 Level
- OSC 2 Level
- Sub Osc Level tracking OSC1 with 1, 2, and 2 PWM Octave Settings
-
Noise Level with 8 Noise Models:
White, Pink, Hex Invert, Crackle, Orgone (pitched), Sonar (pitched)
VCF
- AS3109 Base16 Modes. Low Pass, High Pass, Band Pass, Allpass (aka Phase)
- Cutoff Frequency: 10Hz to 20kHz
- Resonance: 0- Self Oscillation
- CV Follow: 0-100%
- This knob (Audio rate filter modulation from OSC1's triangle output)
- Envelope Modulation via Attenuverter (-5 to 10)
- LFO Modulation via Attenuverter (-5 to 10)
- Pitch Modulation via Attenuverter (-5 to 10)
- External CV Modulation via Attenuverter (-5 to 10)
LFO
-
Rate: 0.1 Hz to 22 Hz8 Shapes with crossfade between shapes:
Sine, Square, Ramp, Tri, Saw, Expo Decay, Random, Smoothed Random - 2 Reset Modes. Reset on Gate and Reset on Gate with Phase Control (via Fade knob)
- Fade Control (LFO Delay with Fade in)
- Bipolar Rate indicator
Envelopes
- 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
- Modulation Envelope is hardwired to Modulation bus
- VCA Envelope is hardwired to VCA
VCA/Output Mixer
- VCA Control
- External Input (post filter/Env)
Inputs/Outputs
- MIDI IN. TRS 3.5mm PSIMIDI (either A or B)
- Clock IN to Control LFO Rate**
- Gate IN. 5-10V*
- V/Oct IN*
- Filter CV IN
- LFO Mod IN
- Audio IN
- Synth/Mix OUT
- USB C IN/OUT. 5V Power 200 mA. DC Adapter included. Also serves as USB MIDI
*Analog inputs override MIDI
**Overrides MIDI clock, switches LFO to clocked mode
MIDI Control/ MIDI Features
- LFO Shape CC# 14
- LFO Rate (divisor when clocked) CC# 20
- LFO Reset to phase CC# 22
- LFO sample and hold/release (switch @ 64) CC# 23
- Pitch bend up range* CC# 3
- Pitch bend down range (use up range if zero)* CC# 86
- Filter freq (via ExtCv slider) CC# 74
- Noise select* CC# 30
- Noise click mode (switch @ 64) CC# 89
- Porta time* CC# 5
- Porta on/off (switch @ 64)** CC# 65
- Porta “glide mode” (switch @ 64) CC# 85
- Mod wheel CC# 1
- Mod depth(LFO to Pitch amount in semitones)* ??
- Velocity to filter mod amount* ??
*Setting is saved
**saved, but only activated when MIDI is detected
Power
5V DC, 200 mA USB C (Adapter Included)
Dimensions
220x120x50 900g
