Hi Rich
 > I would like to be able to utilize the arpeggiator and poly modes, I
 > think it might depend on how much it costs to buy a unit that does it.
 > I also own a Polysix! That would be nice to find a solution for
 > both. I'm writing some dance music for a project and am unhappy with
 > many softsynths and vst plugins (i'm using cubase), to be able to
 > control my analog synths via midi and record the output would be ideal
 > for many parts i'm envisioning. I could most possibly use the
 > midijack and just layer parts multitrack style.
All you said is valid for me (with the exception, that I am using
 Ableton Live and/or Logic).
 It would be perfect to have the five octaves as notes. Higher (or lower)
 notes should be used to switch the keyboard mode: Imagine you could
 press four notes by MIDI and the switch by MIDI to chordmemory; then you
 could play the memorized chord again by MIDI; then switch by MIDI to
 arpeggiator and then give the arpeggio notes by MIDI.... endless games)
 > The Harms unit you are using is no longer in production
No itis no longer in production. The company was a one man show from
 Hamburg. The guy did programming for theater and TV lighting. The
 interface originally was inspired by a performance, where a musician
 coupled CV-controlled dimmers to an analogue modular synth. Harms
 thought, that it is cool to have the same, but having a MIDI-keyboard
 instead of the analog synth keyboard: The envelopes and the LFO (with
 modulation amount by MIDI-events!) are calculated in the interface. So
 in the first run he did not intend to use it for synths!
 In fact: If you have a VCO/VCF/VCA you can do the rest (programmable!)
 in the interface. A very nice aspect is, that you can assign several
 gates in different retrigger modes to one "voice" (which is defined by
 the channel, which produces the keyboard CV). Example given: you play
 legato and every new key triggers a VCA-envelope, but only the notes
 after a pause cause a VCF-Envelope.
 The complete project died, when Hauke lost his complete computer gear -
 computer with harddisk, all backup tapes, everything (don't know the
 exact circumstances).
 Florian