AUDIO Two-way 2.0 audiophile active digital speaker with 4.5" Uni-Q driver Acoustically optimised cabinet with constrained layer damping KEF's unique Music Integrity Engine™ time and phase correcting DSP algorithm Four amplifier active system (2 x 30W + 2 x 70W Class D) Customisable EQ settings (via KEF Control app) CONNECTIVITY Apple AirPlay 2 Spotify Connect TIDAL Bluetooth® 4.2 with Qualcomm aptX™ Digital input (TOSLINK) 3.5mm auxiliary input DLNA Compliant Roon tested Subwoofer output Dedicated apps for iOS and Android​​​​​​