via this auction
"This example, serial number 330047 has been fully serviced and is entirely studio-ready. It is currently missing the joytstick top, however, it is otherwise complete. Quite rare, this is a fantastic sounding synth. The Trident is a polyphonic and programmable keyboard with three independent sections - Synthesizer, Brass, and Strings. It features 8 voices of polyphony and two of the instrument sections can be played simultaneously while in Split Keyboard mode.Each section has its own unique VCO voice architecture, VCF (filter) types, and LFO capabilities. The Brass section's VCF and Envelope Generators are virtually the same as the Synthesizer section, allowing the Brass section to be used for generating additional synth-y sounds as well as faux-brass sounds. The String section has some unique features as well such as a "Bowing" effect. Another unique effect included is a global flanger that can self-oscillate! Flanger controls include Speed, Feedback, Intensity and Manual.
The Trident also features 16 user memory patches. In addition there are three preset memory patches for Piano 1, Piano 2 and Clavi. There is no way of externally playing the Trident with MIDI or CV/Gate without modifications (CV/Gate only controls expression and filter parameters). But the CV/Gate inputs are discrete for each of the three sections. There are also discrete mono outputs for each section and a mix output."
