There is no need for a wrapper on H8 because 7.1 audio is supported natively in H8 custom Kodi.
Some people have reported a problem with some 7.1 audio in custom Kodi but not all and for those that have it sounds like a bug which will be fixed quickly.
Hmm... seems like HiMedia H8 might be the device I've been looking for.
I bought the Zidoo X6 Pro.
Man oh man, the remote control, feels so cheap and yuk, it has a BIG bug (when I switch inputs, man, a horrible noise is blasting my speakers, and the only way to turn it off is to enable/disable stereo upmix or passthrough in Kodi's audio settings).
When I switch HDMI input on my AV receiver, audio reverts to PCM and corrupts.
From what I understand HiMedia H8 also has that problem.
Is that the problem you're talking about?