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 MS-812 by Alyseum is a Virtual Instrument Audio Plugin and a Mobile Audio App. It functions as a VST Plugin and an Audio Units Plugin.
Product MS-812
Developer Alyseum
Price (MSRP)
Type / Tags Modular SynthesizerCopperLanMIDI to CV
Plug-in, App & Soundware Format(s)
This is a Hardware product
PowerBus Powered
DriverSee Operating System section below
Operating System Availability
Download Released
Downloads Released
System Requirements
VST host
Downloads Released
System Requirements
AU host
N/A - Not Released

The MS-812 is an embedded computer board with integral 32-bits processing paths, using Ethernet network to Convert MIDI or CopperLan messages to CV and digital control voltages as used in modular and analog synthesizers. It offers 8 high-resolution CV outputs (octal 16-bits converter) and 12 digital outputs.

A dual SYNC24 interface is included as an alternative function on digital output jacks.

MS-812 are supplied ready to use, the actual linking is managed via the CopperLan Manager software (MAC OS, iOS & WIN 32/64). This freeware tool is also used to monitor the status of all CopperLan computers and equipment. The module can be controlled from any computer anywhere in the network.

A blue LED flashes with incoming notes and two red LEDs do the same for clock flows 1 and 2. This will help the user by giving a visual cue of the activity on these connections.

Features in MIDI mode:

  • 100% MIDI compatible via CopperLan and/or MS-4 (7 bits resolution).
  • Free assignment of MIDI channels and controllers.
  • Full MIDI range (128 notes= 0 to plus 10 Volts 2/3).
  • Multiple simultaneous clock outputs.
  • MIDI to SYNC 24 converter.
  • Eurorack 18 HP wide.

Features in CopperLan mode (Same as MIDI mode, plus):

  • Full CopperLan pitch range in 16-bits resolution (minus to plus 10 Volts 2/3).
  • Octal high-resolution static D/A converter - 16-bits from Analog Devices.
  • Each CV Out can be used as note, setting or modulation.
  • Each DIG Out can be assigned as a Gate, Clock, Reset, control.
  • Voice ID management.
  • Two externals for MAX available.
  • VST/AU plugin allowing hi-resolution control & automation.
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