HI-RES AUDIO CERTIFIED - for high-definition, crystal-clear soundBLUETOOTH 4.1 - for perfect audio streaming from Smartphone, Tablet & Co. VERSATILE - digital and analogue ports for maximum flexibility, compact designUSB AUDIO - XMOS processor and USB audio portCOMFORTABLE - Multifunction infrared remote control and adjustment of volume, bass and treble on the satellite