1The Bluetoothenabled audio receiver can connect nonBluetooth speakers to smart phones, tablets or PCs, supports Bluetooth low energy 5.0 version and APTX technology, and can provide CDquality music through speakers or headphones. Support analog stereo L/R for RCA, S/PDIF TOLIN and coaxial output. 2Super good sound quality, digital wireless music receiver, Bluetooth 5.0BLE low power consumption. 3NFC fast connection supports automatic reconnection, low latency fast streaming. 4The APTX advanced audio code enables Bluetooth to have CD sound quality, can be used with various devices such as tablets, computers, mobile phones, TVs, etc. 5DAC technology, using PCM5102APWR core sound no sand, no boredom, not for low quality audio processing. 6Analog output, stereo left/right for RCA digital, SPDIF output, for TOSLINK optical and coaxial. Condition: 100% brand new Item type:NFC Bluetooth5.0 Receiver Material: ABS Color: black Weight: Approx. 173g Product model: XU22 Frequency response range: 10Hz-20kHz Interface: stereo analog digital optical/coaxial Signal-to-noise ratio: >110dB Output impedance: 75 ohm Distortion + noise:1 x Host 1 x Optical cable 1 x Usage instruction 1 x For RCA cable 1 x USB power supply cable 1 x 3.5 to for RCA audio cable