The K6101 is a dual envelope generator/oscillator with a 16 HP (3U) width inspired by Kilpatrick Audio's PHENOL synth. The two most often praised features of PHENOL are its filters and envelopes. With only three mode buttons and three controls per channel, it looks deceptively simple, yet under the hood exists one of the most unique and powerful envelope generators ever conceived. And it's not even an ADSR. But don't let that put you off. The K6101 will soon win you over with its unique and quirky personality.