Adopt CSR8675 Bluetooth chip, support SBC, AAC, aptX HD, LDAC, and other audio formats. Utilizes high-performance CS8406 as digital output conversion chip to get high output signals in Coaxial/Optical. Up-frequency function, up to 24Bit/192kHz, which makes the sound more delicate.. 2* ES9038Q2M decoding chip, for clear and high-resolution analog signals.. The Bluetooth antenna with external high gain can transmit a longer distance and a stable signal.