Yes all of those extra crystals and gates to drive them.audio master clocks?
Obviously the reference board is designed to be a "Pro" audio board.
I'm just thinking out loud here, being new to the audio processing, trying to find an economical way to add 'good enough' audio to Amino. (Pro can be added anyhow if that's required by a more specialist add on).
I was just thinking a single 12Mhz clock could derive the important good digital rates 32khz,48khz,96khz.
The others 8khz,44.1khz,88.2khz are less important to me and on the ADC side seem a little pointless.
Obviously with this newer version of USB using a 13Mhz crystal isn't as easy as for the 12Mhz USB.
So please be gentle with this digital audio newbie, I'm still getting my head around all of this stuff