Kurzweil 150 Synthesizer

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"This is a pretty rare and weird digital additive synthesis synth. It has 16 voices and 240 oscillators. kind of like an early version of modelling using Fourier Synthesis which uses many sine waves to synthesize just about any sound...thats the simple explanation. I bought it around 11 years ago and I have barely used it or even turned it on since then, ....here is a description

The Kurzweil K150 is a truly unique and professional digital additive synthesizer rack-module. It is big, not just in size but power and creative potential. It features real time additive synthesis with 240 oscillators, 16 voice polyphony, upwards of 240 oscillators and extensive programmability. The K150 implements a unique editing method in which you mix, combine and alter the 150's 22 resident voices and 69 preset programs. You basically manipulate sounds on a harmonic level for creating various new timbres. The keyboard is can be split into 3 regions and capable of up to 7 layers. With extensive layering effects and abilities you can get some thick and unique sounds. There's 186 patches for memory storage and you can get up to 255 when you remove the installed sound blocks or overwrite presets..."