How do I find out how many Ohms my motherboard can handle? I can't find the info in the specs.

Solution
Here is a review of the ROG Strix Z370-F Gaming Motherboard.

"Audiophiles will also appreciate the ASUS SupremeFX audio technology. Not only does it improve the signal-to-noise ratio on both input and output, it has dual headphone amplifiers that can drive a wide variety of headphones with its impedance range of 32 to 600 ohms."

https://www.techarp.com/reviews/asus-rog-strix-z370-f-gaming-review/5/
Here is a review of the ROG Strix Z370-F Gaming Motherboard.

"Audiophiles will also appreciate the ASUS SupremeFX audio technology. Not only does it improve the signal-to-noise ratio on both input and output, it has dual headphone amplifiers that can drive a wide variety of headphones with its impedance range of 32 to 600 ohms."

https://www.techarp.com/reviews/asus-rog-strix-z370-f-gaming-review/5/
 
Solution