It wouldn't be advised to buy the latest pixel now anyway, either get the previous one or wait a few months for Motorola Signature 27, where GrapheneOS will be first party OS, and not hated-by-the-vendor bolt-on.
If you insist on the latest pixel, go check the GrapheneOS discussion forum for all the details.
Instead I have to buy the shitiest locked full of crapware android phone and hack it with an LLM to make it usable because apparently that's what I deserve for wanting a headphone jack.
Best of both worlds.
The DACs/amps you linked are bigger than the Sony mp3 player I had in 2004. It had two jacks and a user replaceable battery. And it was water resistant.
I could go on and on.
Take care!