Single edition - One time, single download option. Lifetime edition - Access to all future updates option. [Recommended] Select option when purchasing. See FAQs for further details of editions. The KOII / EP-133 NotebookJuly 2026 - 2.5.1.a Its a Reference Book! A Guidebook! A Notebook. Delivered as download in PDF format for maximum compatibility. Specifically written, bottom up for the Teenage Engineering EP-133 sampler composer. Covering all things KOII, this book is everything you need as a reference to the Teenage Engineering KOII/EP-133. Step by step walkthroughs help newbie's and advanced user alike get to know how to use the device to its fullest. Finally its a notebook where you can make your own notes and comments in the spaces provides bringing together a comprehensive and customised guide. - High-quality diagrams, designed bottom up for the book - Over 220 pages of content and note space - Guidebook + Notebook concept. Electronic annotations on tablet or computer when using applications such as Goodnotes, Adobe Acrobat etc - Quick reference section. - Small footprint PDF format for maximum compatibility and wider distribution. Coverage of many more devices - PDF Bookmarks and Hyperlinked Contents - Deeper dive and walkthrough approach Latest: Summer July 2026 OS Version 2.5.1 Book 'a' Hyperlinked, Whats New Changelog 28MB or 64MB for early editions. Unlock a LOK state. Timing correct; workflow plus nudge option added. System codes: SMP > USB for audio and sample rate. Sample rate options. Sample time increase. Update non-standard firmware USB Sampling + audio. TRIm Sample position view. TIMe Stretch mode - Reverse sample, trim. Auto Chop, Transient and Equidistant modes. Fader Reset behaviour. Loop options and playback position. LED Brightness. Knob / Fader takeover behaviour. Sample edit audition mode. Removed 'beta' status from backup & restore. Keys Mode and removed sys codes. Apreggiator added. Scales New scales added and note labels changed from sharps to flats to align to KOII standard. CC Page added. Song Playback Position. FX can be added while resampling. Copy / Paste Pad Notes. Kiosk Mode. Soloed FX+group also selects the group. Updated workflow examples. Sample Tool overview updated. Previous VersionsChampions 2.0.2 EP133 OS Version - October 2026 Book 'a' version.