Music enjoyment from different sources Enjoy Hi Resolution playback via USB and Optical In Supports 96kHz/24bit, playback up to 192kHz Bluetooth for wireless audio connection with NFC support Built-in NFC at remote control With Multi Device Pairing / Speaker Link / Headphone Link Android device playback via USB MP3 Player connection thru USB and Audio In MP3 compatibility, WAV / FLAC for Hi-Res compatibility Total RMS 50w (2 x 25w). Multi Device Pairing: 4 mobile devices connected to audio set and sequential playback to create party mode environment. Headphone Link: Wireless connection to Bluetooth Headphone device.