EP–133 K.O. II is a powerful sampler, sequencer and composer. record sounds around you, resample sounds with effects, sequence your samples, chain scenes in song mode, tweak and automate filter, pitch and more. add stereo effects, sidechain and punch-in™ fx. go from idea to track faster than ever! *new OS 2.5 includes: usb audio recording and monitoring, reverse sample playback, adjustable sample rate recording, longer mono samples, equal length auto-chop, a new shortcut to adjust keys and scales faster and improved timestretching. built-in mic and speaker 128MB sample storage 12 stereo / 16 mono voice polyphony 6 built-in master FX and 12 punch-in fx pressure sensitive keys and multifunctional fader sampling frequency: 46 kHz / 16-bit 1x stereo in/out, sync in/out, midi in/out and usb-c powered by 4x AAA batteries, or via usb-c dimensions: 240 x 176 x 16 mm | 9.5 x 7 x 0.7 in comes in a redesigned paper-pulp box, ideal for short trips and everyday carry