I’m confused, first of course the iPhone has a dac, it’s made by Cirrus logic it’s included in an apple chip. The dac in the M0 is better so why not just send LDAC from the M0? That would be high quality audio. Especially for BT transmission.
Anyways the Sony headphones have their own dac to process the sound input so dac doesn’t really matter now that I think about it. You could probably buy a BT transmitter that does LDAC and supports digital output I would think if you want to use your iPhone.
Most any dap can output a pure digital signal bypassing their dac, usually this is used as a transport to a mojo or idsd micro etc that has a better dac, so the iPhone isn’t special in that regard.
iPhone's that don't have a headphone output don't have a DAC. The dongle supplied has the DAC:
https://ifixit.org/blog/8448/apple-audio-adapter-teardown/
Using the DAC in the M0 would be fine but I can't get it to power over USB. Using BT from the iPhone to the M0 then LDAC to the Sony's would be SBC or maybe AAC at best (can't tell) from the iphone, which defeats the purpose of all of this.
What digital to LDAC dongle would you recommend? That was my whole reason of buying the M0.
Yes, i forgot about the DAC in the Sony's, good point.
"Most any dap can output a pure digital signal bypassing their dac" , right, how can i do that with the M0 and get audio via LDAC?