The Con Brio Advanced Digital Synthesizer (ADS) 200 was an extraordinary synthesizer released in 1980 costing over $20,000. Based on additive synthesis, FM, phase modulation and some other esoteric sound generation methods it had 64 note polyphony and 16 oscillators per note. 

Quite a beast, and a splendid looking one too - perfect for a retro-futuristic mug of tea!