Profession 4-channel, 4-deck, 8-source premium digital mixer and controller that features a slim table-top design for mobile DJ portability and includes an user download of full-version Serato DJ software. It provides an intuitive 4 deck control with independent deck buttons, a real-time mixer matrix operation, analogue sources and stereo USB MIDI/audio connectivity. Mixer features a Denon's original, X-F link audio/video assignable cross-fader function (for Serato Video w/upgrade), a high resolution 105mm touch-sensitive jog wheel, a smooth 60mm long pitch slider with high 14-bit resolution, file browse navigation keys and a rotary encoder file selector knob with illuminated ring, and 4 + 4 Hot Cue/Sampler buttons with bank selector key. It allows for Auto/Manual looping with Loop Adjust and ROLL controls. It further provides Censor and Slip features, 3 EFX adjustment knobs with on/off buttons and Beats Knob selector, large size Cue and PLAY buttons, a powerful Shift Key that can be used for various dual button operation, Search Keys (<< >>) to advance around within the file, Denon's legacy "Pitch Bend" keys, a Vinyl on/off button, a SYNC key for beat matching between decks, a Key Lock on/off button, Filter/Video adjustment knobs with on/off buttons and selectable PFL input gain and program meters. Mixer provides an independent CUE System on all channels, a Split Cue function with Cue/Master pan knob, a high-quality, high-output headphone amp, 45mm Channel/Cross Faders, an independent Channel A-B Thru Switch (crossfader) as well as a Cross Fader contour adjustment and an independent 3-band channel EQ with Kills (High-Mid-Low). XLR balanced and RCA unbalanced master outputs are provided, with a master output stereo/mono switch. Mixer further provides a Booth Output w/Source Selector and level control, 2 microphone inputs (XLR and 1/4" TRS) with a 3-Band EQ (High-Mid-Low), mic ducking and a built-in echo effect. User settings can be customized via Various Utility presets, firmware is upgradeable via USB. Device is powered by an AC adaptor (included) and is compatible with MAC OS X 10.6 or later and Windows XP/Vista/Win7/Win8. Rack-mounting size: 19”/6U. Dimensions (without rack ears): 440 x 50 x 283 mm. Weight: 4.1 kg.