via this auction
"Concernig the O.S. VERSION:
- Following Internet searches, I believe these are the latest OS versions:
MSR (mainframe) Version 1.09 / ASM (synthesizer module) Version 1.13
- As you can see, the mainframe of the actual item has OS 1.09; can´t really tell the ASM version at this point
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Some facts/rumors about the MSR-2:
- It has Audio-In, so you can process external audio signals thru the envelope/filter et al.
- The Marion MSR-2 is known for having the 'Oberheim sound' packaged inside a compact single-space rackmount module with modern digital reliability and MIDI implementation.
- Despite its rather harmless and simple appearance, the MSR-2 allows for some fairly complex but intuitive programming. The filters, envelopes, LFOs and other parameters are very analog-like in their sound and editing methods.
- The module is 16-part multitimbral.
8 voices and HROs (high resolution oscillators) used in here, midi control, the rest is quite like the Matrix 6, this mainframe can hold up to 2 complete ASMs (16 voices) and a main graphic EQ. planned: sample player, wavetable synth, FX, FM?.. - Module never came up.. has triangle to saw morphing.