OS 2.0

the OS 2.0 update packs a ton of new knockout features like
resampling, chopping, a pumping sidechain, song mode to arrange
tracks of up to 9,801 bars, an optimized playback engine with
increased polyphony, plus extended MIDI support.

Knockout features:

•9 projects each with 80,000 notes
•projects contain 4 groups each with 99 patterns
•patterns have 12 TRACKS for samples and MIDI
•song mode for chaining scenes into 99 positions
•resampling for patterns and sounds
•variable pattern length per group (1 to 99 bars)
•16 MONO / 12 STEREO voice polyphony
•use groups to mix and match patterns on the fly
•record 12 fader assignments simultaneously
•sequence in free time or quantized with swing
•flexible and dynamic MIDI functionality 
•ANY pad CAN BE assigned TO A MIDI channel
•loop mode from OB-4 with length AND slide
•12 pressure and velocity sensitive pads
•hands-free sampling key combination
•instantaneous time correction and erase
•slice samples LIVE OR AUTOMATICALLY
•note-triggered sidechain for groove control
•stereo / mono sampling at 46.875 kHz / 16-bit
•punch-in effects 2.0 (PRESSURE SENSITIVE)
•instant commit to quickly construct beats
•32-bit float signal chain, 24-bit ADC / DAC
•SYNC IO FOR EXTERNAL GEAR. 8TH, 16TH NOTE OR SYNC24
•6 built-in send effects and a master compressor
•back up + restore projects in ep-sample-tool
•trim and customize samples in ep-sample-tool

More info: EP-133