Sequential Circuits Prophet 600 Analog Synthesizer w/ GliGli OS Upgrade SN 2447

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"The GliGli OS upgrade adds the following:
-Greater resolution of many of the sound parameters with an improved refresh rate
that is making the instrument much more responsive.
-Faster, smoother amplifier and filter envelope generators supporting four different
modes:
1. Fast Linear
2. Slow Linear
3. Fast Exponential
4. Slow Exponential
- A new LFO function generator with a wider range from one cycle every <20 data-blogger-escaped-seconds=""> to about 60Hz with four new waveforms in addition to the original triangle and square including sine, random stepped, noise (like on the original Prophet 5, but non- periodic) and sawtooth (ramp up)
-Multiple keyboard modes including:
1. Poly first note priority
2. Unison (all voice) Hi-key priority
3. Unison (all voice) Low-key priority
4. Solo (one voice) Hi-key priority
5. Solo (one voice) Low-key priority
-Mix Overdrive which now allows the output from both oscillators to drive the mix
VCAs A and B harder as well as the Curtis 4 pole filter resulting in new sonic
possibilities.
-Pitch Wheel interval selection of plus/minus one octave, a minor third and a fifth
-Pitch Wheel reassignment to the VCF and Volume or off
-Modulation wheel intensity setting from Maximum to Medium to Minimum
-Full Midi In control including:
1. Amp and Filter velocity sensitivity with an external keyboard controller
2. Continuous Controllers (CC) of all sound parameters
3. Program change (PC) to choose current preset
-A new and improved tuning procedure
-Chromatic and free Oscillator course pitch control
-Plus/Minus setting for Oscillator Fine Tune and Filter Envelope amount for Poly Mod
and Filter
-Assignable, Random And Up/Down Arpeggiator
-Debounce feature that prevents unintended retriggering caused by the old keyboard
Included in the listing is the Sequential Circuits Prophet 600 as pictured."