High res audio

Hello,

I’m a little bit confused about apple audio quality. Not the AAC that iTunes uses, but high res audio.

Apple clearly states that the iPhone cannot play flac (well it can play it just doesn’t support it) but yet Tidal is claiming MQA quality through their iPhone app how is this possible?

Also quboz is claiming 24/192 over the their iPhone app, how is this possible?

I’m actually looking to get high res quality audio 24/192 to my home theater preamp. I know I can’t Bluetooth it from the iPhone, nor can I airplay it. Also the camera adapter fix still only supports 44 or 48 kHz. Is it possible somehow?

I own iPhone 11 pro max, first generation iPad Pro 9.7 inch, late 2013 MacBook Pro 15 inch. If I could get 24/192 out of either one of these I would be happy.

This is actually three questions, but I appreciate the help thanks.