https://www.npr.org/sections/thereco...-audio-quality

This has been up for a while but I only just tried it.

The page allows you to test yourself/your headphones or speakers to see if you can distinguish between 128kbps mp3, 320kbps or uncompressed WAV.

This is kind of important given some services charge more for higher quality and the big size of the uncompressed files. The bootleg community get very excited about such things.

I took the test expecting to choose a mixture of 320 and uncompressed because I wouldn't be able to tell. Instead I was completely consistent all 6 times choosing 128kbps as the best one!!!!