Information found here:
Install Sierra:
Update Clover from Clover Configurator, then reboot
Copy kext to inject from 10.11
cp -R /Volumes/EFI/EFI/CLOVER/kexts/10.11/* /Volumes/EFI/EFI/CLOVER/kexts/Other
Copy NVDAStartup.kext from El Capitan, to avoid a kernel panic on Sierra install
cp -R /Volumes/osx/System/Library/Extensions/NVDAStartup.kext /Volumes/EFI/EFI/CLOVER/kexts/Other
Download Sierra from Mac App Store
Reboot and choose Boot macOS Install option. Before running the install, press spacebar and tick Without cache + Inject kexts.
This will install and start Sierra.
When Sierra up, re-mount EFI partition
Remove Sierra NVDAStartup.kext
rm -R /Volumes/osx/System/Library/Extensions/NVDAStartup.kext
Copy NVDAStartup.kext from EFI partition to Desktop
Then install audio drivers:
Re-mount EFI partition
Run audio_cloverALC command to install Toleda AppleHDA
Reboot, et voila