First, Fix Your Skull

They seem to be forgetting one item. Air conduction is much more sensitive than bone conduction. Only if the conductive mechanism of the middle ear is damaged does bone conduction have any significance. The volume and shape of the ear canal is likely to have more of an effect on normal hearing than any change in the shape or size of the skull. It would be interesting to run a similar study on a group of people with advancing otosclerosis a disease where the bones of the middle ear become frozen and can not transfer vibration from the tympanic membrane to the inner ear. Variations in hearing between people with normal hearing is to the greatest extent due to the interpretation of that thing between the ears. 

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.

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."

Well, it's one reason among many and not likely to be the greatest one. 

No doubt about it. Size of ears is likely relevant, as well as actual acuity. Just as some people can see better than others (some folks don't wear glasses) some people can hear better than others, "better" in the sense of being able to discern a greater frequency range. Human hearing and vision are both very limited when you consider how great the range of light wavelengths and sound frequency spectrum are. We just don't see or hear what we're missing.

One good thing about getting a haircut (male) is that
recorded music, and live music, will sound better to me,
as a result.

An old expression for "haircut" was "getting your ears lowered."

Gosh, no wonder older bald audiophiles hear better. 🤗

Damn...wishing I was bald...

Is anybody thinking what I’m thinking? Bald headgear for audiophiles with hair. Improve your hearing without having to shave your head. Hel-loo! Comes in various styles, the Curly, the Yul Brenner and the John Travolta.

Try the Curly; woo woo woo woo. The Moe and Larry leave something to be desired. This is why Curly often says "hey Larry, hey Moe" because he can't believe what he's hearing.

“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.

For those who listen nude try shaving your chest and back.