OK, fitted the carputer tonight. Not completely installed, but verified the hook-ups and audio quality.
Attached are a few pics of the console fired up, and the hubs/etc ready to tuck away.
What is good:
1) sound quality from the unit through the NAK is definitely listenable, not as good as a cd in the NAK though (see issue 1).
2) standby and restore are FAST! a few seconds each. And fairly reliable, time will tell on that.
3) Patrick has done an awesome job of the soundstage/imaging and producing a flatter response.
I didn't realise a smaller car impacts the dynamics/acoustics so much! very hard to have a broad and deep sound stage in a smaller cockpit.
Have a few outstanding issues:
1) cannot standby the unit from the acc input - trying to resolve this both through experimentation and talking with Infill in Korea. Have a workaround - need to sleep the unit before killing the ignition.
2) something is colouring the sound, I believe that although I have set digital output only and turned off cmss, eq, etc. The volume control still attenuates the digital signal, so the mixer must be active. I need to figure out how to disable that and have "pass-through" digital directly from disk to the coax output. Then, theoretically, I should get a BETTER signal than from a cd, since the audio copy software has corrected for jitter.
3) steering wheel controls work (almost perfectly) just need to manually tweak some values.
Looks like I am cutting it fine for the ride on Sunday. I am getting the car back on Saturday! Fingers crossed!...
Oh, and the aircon unit from Kanatechs looks to work great, just like factory (or very close).