[chii]

I think there needs to be a standard "demo" reel of audio quality, similar to the way TVs/displays have the multi-color grid/gradient thing for showing clarity of the pixels.

It's hard to compare when a person goes into one shop and hears an action movie, but in another one he hears a concert/symphony on a different speaker/headset.

[gruez]

so a frequency response graph? eg. https://www.rtings.com/headphones/tests/sound-quality/raw-fr...

[lumost]

Now we just need to turn the graph into 1-5 numbers which consumers can understand.

[chii]

oh yea, that's pretty much it!