I just found this piece yesterday and called them. At present this is the only option for B&O amplified systems.
@
BBLV yes and no. The new B&O amp uses serial USB to get digital audio from the sync 3 APIM to the amp. So, it would honestly be possible to harvest the audio. But someone is going to have to figure out what protocol/drivers is/are used to send the digital audio to the B&O amp. My guess is that NAV-TV paid a lot to figure this out, and the B&O amp is a DAC and Amplifier. So the NAV-TV piece is a USB DAC and pre-amp. Once it is sussed out, you could probably build a raspberry pi to decode the audio (from the USB), and output TOSLINK or RCA output. I wonder if you could plug a USB DAC in and get audio out. I have some USB DACs. But the NAV-TV piece is 12 channels out, that works with the sync's balance, fader, subwoofer, and mid/high/low EQ. So it might not work with my two channel DACs.
Alternatively, I keep asking if you could use ForSCAN (we already know the codes to control how audio is output from the APIM), and set the APIM back to the setting it used for the SONY amp, and then use the $250 PAC piece. I just don't have the time and disposable $250, to try it out. I will end up ordering this NAV-TV adapter in the next few weeks, so I can just have a shop do my stereo. If I keep waiting until I have the time to tinker with it, it will never get done.
I might catch a wild hair in the next couple of weeks and mess with the USB that is plugged into the B&O amp.