Moog Minimoog Model D with 1/8" Inputs

via this auction
"For those that do not know... The Minimoog is not the easiest vintage synthesizer to interface and sequence in a contemporary studio environment. It has a different standard (and jacks too) for CV and Gate than the majority of it's analog peers. This creates an obvious challenge in regard to controlling it with MIDI. That's why the previous owner had his tech perform a small modification that allows it to be hooked up to a standard MIDI to CV converter with no hassle. This "modification" is very unobtrusive and that was important to me, because I believe in keeping the integrity and appearance of such a legendary synth intact.

Here's how the CV/Gate mod works... The 1/8" input jacks that are neatly installed and labeled on the back panel (CV, Gate, Bend), allow you to plug any 1V/oct MIDI to CV converter in and start playing or sequencing, right away. You can use any converter on the market too, because the mod makes the Mini accept normal trigger signals at it's 1/8" jack, instead of the obscure S-trig jack that Moog originally implemented. Now, on the bottom left of the Mini's control panel, (section "Controllers") you will see a small toggle switch and a little blue-capped knob to it's left. When you want to control the synth via CV/Gate you flip the switch, thus disengaging the Mini's keyboard and allowing you to sequence or play it from your DAW, MIDI Keyboard Controller, etc.... In this state, the small blue-capped knob controls the amount of portamento, and the Minimoog's keyboard is bypassed. Whenever you want to go back to playing the Minimoog's keys, just flip the toggle switch back! It's that simple.

I want to make it perfectly clear that the modification described above in no way affects or changes the characteristics inherent to the Minimoog. ALL of the Minimoog's panel controls remain fully functional, including the very useful "Keyboard Tracking" switch (VCF function) and are completely unaffected by the "CV/Gate Mode"."