Great news, thanks to the cooperation between GeekBox & Tronsmart developers, OpenELEC 17.0 ROM has been released to fix HDMI Audio Output under Linux kernel 4.4/4.5.
In an effort to avail OpenELEC in Geekbox, the development team haven been customizing a dedicated firmware and will share with our customers as soon as it passes through our stringent test. Moreover, the OpenELEC ROM for Tronsmart IZ37 is also listed in their daily agenda.
Under our testing, Audio output works great via HDMI cable and speaker jack(system->setting-system->audio output->audio output devices, choose USB Audio device)
With support for Openelec, Ara X5 Plus stands out from the rest. 10bit, 4K@H.265 ,3D ISO, Blueray ISO, AC3/DTS 5.1 pass through etc, all works as expected. Plus, WiFi/Ethernet works ok, you can enjoy Add-ons from Kodi too.