Bluetooth 5.0 LDAC Transmission.. D50s already has Hi-Res Audio Wireless certificate and LDAC certificate. It adopts CSR8675 chipset to support LDAC/ AAC/ SBC/ aptX/ aptX-LL/ aptX-HD protocol. To get better sound quality, it will decode ES9038Q2M. And Bluetooth module could turn off separately at the menu XMOS XU208, Customized Driver&CNC Uni-body D50s uses XU208 which is the second gen of XMOS for USB interface. We also customized Thesycon drivers for D50s(Win7 or above). These make D50s provide better support for DSD native. D50s is made from a solid aluminum brick. It provides better mechanical strength and better anti-interference ability OPA 162 SoundPlus and LME4972 High-Performance Audio OP Amp. 2*OPA 1612 SoundPlus OP and 1*LME49720 OP amp from TI build the LPF of D50s.The excellent performance of the OP amp ensures losses of signal transmission. The LME49720 is installed on an OP amp socket, people who enjoys DIY are also able to swap the OP amp to get different sound. DAC+Pre-Amplier Two-in-One. D50s is a DAC with adjustable volume so it can serve as DAC+Pre-amplifer to connect to a power amplifier or a powered speaker and user D50s to control volume. You get one device but two different applications. D50s is truly a product that you should have Support Highest DSD512(Native)and PCM32bit/768KHz USB of D50s supports DSD64-DSD512(Native)and PCM16bit/44.4kHz-32 bit/768 kHz.Coaxial and Optical support highest PCM 24 bit/192 kHz and DOP DSD64.