TOPPING D50 MINI HIFI AUDIO Decoding ES9038Q2M2 USB DAC XMOS XU208 DSD512 32Bit/768Khz OPA1612 USB/OPT/COAX input UNIQUELY CUSTOMIZED DRIVER - Supports PCM Sample Rates up to 768kHz and DSD512. HUMANIZED DESIGN - There are 7 kinds of digital filters for you to choose, meet all your needs. PORTABLE AUDIO DECODER - Stylish, smooth aluminum housing and chassis for long-lasting use. Mini size, easy to carry. TOPPING AUDIO D50 DAC - 2 x ESS SABRE ES9038Q2M, Provide superior audio experience, outstanding THD+N levels. HUMANIZED OPERATION - 7*digital filter can set itself.