Got me with the battery life. I've read Sony's spec and surprise myself too. However by design with no 3rd party Shelf DAC or in this case, SONY's proprietary FPGA like Chord's design, uses a lot less energy/voltage to make 96/192/DSD files more efficient and a little tax on batteries life unlike other 3rd party DAC. Even AK, Fiio, Basso, QP1R can't match. I gave SONY that strong point, but hearing DSD format requires a balance connection is a little bit absurd to me. This IMO only so not to get mad.