MOTU 828

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There is a Mark Of The Unicorn (MOTU) 828 mkII digital audio interface. It powers on but takes about 20/30 seconds to warm up. It only has a firewire connection, which rules out connecting to many contemporary computers. It is connected to the computer music workstation.

Specs

It has some impressive pro audio features circa 2004.

  • 8 mono 1/4" analog audio inputs
  • 8 mono 1/4" analog audio outputs
  • 2 mic preamps with +48v phantom power
  • 2 mono 1/4" analog main output
  • BNC coaxial word clock
  • 96khHz optical in/out
  • S/PDIF RCA in/out
  • SMPTE in/out
  • 5 pin MIDI in/out
  • ADAT DB-9 sync in

Condition

The unit is in good condition. Digital level meters work. I couldn't figure out how to get the S/PDIF or optical ports to do anything interesting, despite the Denon having both RCA and optical inputs. The LCD screen on the unit has a broken backlight. It's almost impossible to see. Unless you shine a light on it.

As of Fri Mar 25 09:31:35 UTC 2016 this device went into "xmastree mode". This means the digital level meters began flashing in a regular pattern, all colors. The non-backlit LCD screen displayed some hexadecimal numbers. I think the firmware crashed though the analog components and the software driver continue to work. It also makes noise at periodic intervals without user input. This can be thought of as "fullness" or "unpredictability" or maybe "warmth". I think it's just annoying. Caveat emptor. I discourage recording important things not considered ephemeral with this device.

Reference Sheet

http://www.motu.com/products/motuaudio/828x#firewire

Driver Downloads, including "legacy products" of which this device is a type. Mac/Windows. Linux tbd.

Generating Control Voltage

It appears this device is quite interesting in that it can generate CV range signals to drive other modular synths. This means the computer music workstation can also act as a module in a modular analog synth rig. People talk about using it for analog sequencers and off the shelf modular products.

PICS!!11

The following is the Thunderbolt version, which is slightly different than the mkII Motu828.jpg