Native Instruments Komplete Kontrol S61 M B-Stock, B-Stock with Full Warranty@+*Slight signs of wear*@+@+, Keyboard Controller, For all virtual instruments, Fatar keyboard with aftertouch and 61 semi-weighted keys, Ergonomic pitch and mod wheels plus touch strip, Pre-configured mapping for all KOMPLETE instruments and hundreds of NCP-compatible (Native Kontrol Standard) instruments from leading third-party vendors, Complete VSTi support, Tag-based preset browsing: Quickly find and instantly preview sounds, Two high-resolution color displays for browsing, sound tweaking and more, Light Guide: RGB lights above each button indicate drum cells, key switches, chords, keys, and more, Smart Play: Recognize keys and inversions with the Light Guide, play chord progressions and arpeggios with single keys or any key only with white keys, Seamless integration with the MASCHINE hardware / software, Intuitive control of Logic Pro X, Ableton Live and GarageBand, Two freely assignable inputs for foot pedals, MIDI In / Out, Power supply via USB 2.0, Dimensions (WxHxD): 1006 x 84 x 297 mm, Weight: 6.55 kg, Register your hardware to download the KOMPLETE KONTROL software and KOMPLETE SELECT for free (11 high-quality software tools and effects: Massive, Monark, The Gentleman, Drumlab, Reactor Prism, Scarbee Mark I, Retro Machines, Vintage Organs, West Africa, Solid Bus Comp, and Replica)@+*System Requirements:*@+@+, Mac OS X 10.11 or macOS 10.12 (Intel Core 2 Duo), Windows 7 or later (Intel Core 2 Duo or AMD Athlon 64 X2), Internet connection and graphics card required with OpenGL 2.1 or higher support (only for software download and activation), 4 GB RAM (6 GB recommended for large KONTAKT instruments), USB 2.0 or higher (cable is included)