I have Sennheiser HD 25 I bought 15 years ago. I play music through my Pixel 5a with a headphone jack and my iMac. I have no idea if this is good enough for the test but I will try it anyway.

I did the NPR test.

I’m on my iMac and I chose 128 kbps four times… I chose 320 kbps once and Uncompressed WAV once.

I did so horribly. Lol.

This puts either my hearing limits or the limit of my tech. If I don’t get better equipment, I have my answer forever.

This is truly great. Thank you for this suggestion.