The EP-1320 takes the EP-133 K.O. II's engine and rebuilds its entire sound library around the Middle Ages: hurdy-gurdies, lutes, Gregorian chants, thundering drums, and punishing percussive Foley effects, all recorded specifically for this machine. It's billed as the world's first electronic medieval instrument, and it's not entirely joking about that.

Underneath the theme sits the same capable groovebox as its sibling — six stereo or twelve mono voices, 128MB of memory split between 96MB of ROM sounds and 32MB for user samples, and a high-resolution sequencer with nine user projects. A redesigned set of send effects and a new arpeggiator adapt the workflow specifically to sound period-appropriate rather than modern.