The Korg DSS-1, released in 1986, is a monster hybrid of analog, digital, and sampling-based synthesis. It has the best Voltage Controlled Filter (VCF) that Korg ever bestowed on a synthesizer (it was also the last VCF-based synth that Korg ever made). Even today, a resonant filter sweep from the DSS-1 can put all but the mightiest analog synths to shame! It's an eight-voice polysynth with two oscillators per voice, and a unison mode that allows you to stack up all 16 oscillators into one very phatt and powerful monosynth.