Voyce LX9 Programmable MIDI Controller w/ Original Box SN 1610914

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"This is a MIDI utility from the 80s, allowing you to do all sorts of event processing. It is in excellent condition, all the buttons function, and my midi monitor shows that it passes MIDI. Unfortunately this has no manual, and the manual is nowhere to be found online, so you’ll have to do some detective work to figure it out."

2nd one to be featured on the site. The first was back in 2010.

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VOYCE LX4 MIDI Controller Processor

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"This VOYCE LX4 Midi Controller allows multiple layers of MIDI control, including splits, chains, layers, merge and octave control. Typically two MIDI controllers are connected to it, to control one or more sound modules or other MIDI devices. Included is a 9 V power adaptor. It has many similarities to Oberheim Systemizer - the companion piece to the Oberheim Cyclone."