Sony RSXGS9 Hi-Res Audio Media Receiver with Bluetooth (Black) High-Resolution Audio compatible with wide codec support, ESS DAC chip provides optimum quality from all your digital music files, DSEE HX upscaling restores quality to compressed files SongPal app system control, Direct USB DAC connection for direct streaming playback with the ESS DAC, USB playback and smartphone charging, Integrated Bluetooth technology One-touch listening with NFC, 5-volt RCA and optical outputs for amplifier or processor connection, 14 mm aluminum front panel with white OLED display Super rigid dual layer chassis for anti-resonance and low-noise design