DK Synergy vintage synthesizer w/ kaypro

via this auction
"complete fully functioning early 80's DK Synergy system. It includes 5 cartridges, two Kaypro computers (one as a back up), and all the software you will need. It has also had a midi upgrade... It comes with 5 cartridges so hooking up the kaypro is not essential to discover all of the unique sounds this beast has on offer. It can go from the sound of an angel's harp to the sound of dump truck driving through a nitroglycerin plant. It has a very diverse tone pallet and a great analog digital hybrid feel." Note the Carlos cartridge. Wendy Carlos used the DK Synergy. You can find a little more info in these posts.