rlw6534
Headphoneus Supremus
Smart of you @rlw6534 you called it, it’s a 9219C. The more I’d thought about it in the meantime, the more I thought your hypothesis was clever - what other chip could be used to get such a huge play time? It’s a smart design in that the DAC itself is killer, amping is where you can improve on the package with a dedicated circuit. Battery life through the optional class A will be closer to average presumably.
Yes, my guess was totally based on the long run time with the 9219 being the most power efficient MQA compatible DAC/amp that I was aware of. I guess we'll see what "Class-A Act" means.