The Topping D70s uses dual AK4497 one working for each channel. So creating better channel separation than using only single AK4497 for both channels.
The resolution of Cd is 16bit 44.1khz and SACD is DSD64, the D70 can offer upto 32bit 768Khz and DSD 512 which is far beyond the sampling rate of these standard formats for better sonic proformance whilst also using a AK4118 processor for lower jitter on the Spdif input, the D70s has considered quite a bit to give you a product that has considered proformance at it's core.
The D70s has you covered on inputs AES, USB, Optical, Coaxial, IIS and Bluetooth
*Included with the D70s is a Remote control, USB cable, UK or EU AC cable*