Thanks for the heads up that there is a new driver for us at Toppings download page:
V5.0.0 driver for E30, D10, D10s, D50, D50s, D70, D70s, D90, DX3 Pro, DX7 Pro.-TOPPING (tpdz.net)
"V5.0.0 driver for E30, D10, D10s, D50, D50s, D70, D70s, D90, DX3 Pro, DX7 Pro.
Version: V5.0.0
Download here
Please noted that this driver is not for D30 and DX7(DX7s is OK)"
The "readme.txt" file isn't much more informative, except to tell us the update date:
"2019.12.04
The driver and configuration guide are suitable for all TOPPING DACs that need to be installed driver (except D30, DX7)."
The only newly dated item in the unzipped folder structure is the "Topping_UsbAudio_v5.0.0_setup.exe" dated 1/13/21
@JohnYang1997 - John, please, what are the driver changes? Are there new features or bug fixes?, or is this an update to support new hardware - D70s?