I finally put together my build after getting all the parts together. While the hardware and OS X compatibility with third-party firmware is fantastic, I'm still reeling from the absolutely disgusting way the Kickstarter backers were treated, and the non-existent customer support from Quo.
I've still got to sort out a graphics card and virtualisation with Parallels or VMware but I think I've read up enough on the process that I should be fine. I'm more interested in dealing with the audio distortion also reported by other Mavericks and 10.8.5 users.
I installed the audio patch listed on the wiki and am experiencing increasing distortion a few minutes into playing music before the music eventually drops out. I've chased down countless forum posts where others with Gigabyte boards experience the same and had no luck with suggestions that Chrome's Flash plugin and other items were the cause. If someone with a Quo board could give a nice succinct suggestion of a driver they know works and how to use it I'd be appreciative - as most suggestions seem to involve DSDT patching and involved processes that this board is supposed to avoid.
The easiest fix I've found is removing the speaker cable from the back of the computer and re inserting it, but this isn't ideal. I've made a short script that resets the audio that is similarly less-ideal as the sound drops out for two seconds.
If you want to use it paste the code below into a text editor and save it as fixaudio.sh or fixaudio.command (if you want to double click it or save it as a dock shortcut. Enable the "Close if the shell exited cleanly" option in terminal preferences). Don't forget to make it executable by typing chmod +x fixaudio.sh into a Terminal window.
You also will need to install the command-line app audiodevice (download here) and make sure it is installed to /usr/local/bin or /usr/bin or somewhere in your $PATH. If anyone knows how to do this without the third-party software install or without the two second pause please let me know!
# Script to fix audio distortion with Gigabyte boards
# v0.2, 10 March 2014
# Requires audiodevice
# DL http://whosawhatsis.com/paraphernalia/audiodevice.zip
# INFO http://bit.do/audiodevice
# Make sure audiodevice is copied to /usr/local/bin/
# or /usr/bin/ or other local path.
# Confirm the interface you wish to output to at step 2
# "audiodevice output list" will list the outputs,
# these include "Internal Speakers", "Line Out" & "Digital Out"
# TIP make script executable for ease of use.
# STEP ONE
# switch to an alternate output
audiodevice output "Line Out"
# STEP TWO
# Delay switching back to preferred output
# (needs to be greater than 1sec)
# STEP THREE
# Switch back to preferred output
audiodevice output "Internal Speakers"