“I've posted more than once about how different ears hear differently. If your ears stick out from your head, you will hear much different from someone with closer to the head ears. This is why there is disagreement among people about what sounds "good." I suppose the physical dimensions of your skull contribute to this factor since ears are attached to the skull, but since you hear with your ears, not your skull, I have no opinion on skulls”

You know. I posted something very similar to this several years ago and was chastised about how silly the notion is, but I believe it affects our perception to sound. To prove this just cup your ears, the effect is quite noticeable. 
Yeah, absolutely. And it does seem that many on here discount the entire notion of the individual physical character of one's ears. But chastisement rolls off me like water off a duck.
Hairy ears are also bad.
Shape of ears and cartilaginous geography also.
There may be a market for nanoquantum pinna surgery.