High impedance headphones problem

[MTBRiderLV]

Hello! I have ROG Phone 5s and recently purchased ROG Phone 8 pro. I have decent headphones Beyerdynamic DT770 Pro 250ohm and for 5s it wasn't a problem to drive them, but for 8 pro looks like it doesn't have enough power to drive them-they aren't as loud as on 5s and make weird sounds on max volume. I can't find any information about how high impedance it can drive.

[MTBRiderLV]

I have ROG 5s and it definitely supports 250ohm headphones.

[MTBRiderLV]

It turns out that ROG Clavis could be the solution for everyone who wants to use hifi headphones with any Asus device without built in DAC amp since Clavis has ESS 9281 quad dac. It is type-c device.