Correct pronunciation and an accent that isn't too obnoxious (which is entirely subjective, I know). That's about it, really.

A good, expressive reader that fits the book! I’ve had books that are good completely ruined by the wrong reader. For the best example of a good reader, look up Jim Dale’s Harry Potter readings or Tim Curry in the Abhorsen trilogy. If you can get access, the guy who read The Martian for the National Talking Book Library blows the public audiobook reader out of the water (this is why I struggle to justify buying audiobooks; 99% of them are read badly and most of us who are blind have access tofree versions). Oh also check out the reader of the Imperial Radtch series and the lady who reads AE Dooland’s Solve for i.

Spell the damn character names. Somehow, somewhere. It’s caused so much confusion when I’m pronouncing a name differently than someone who read the book. And I forget the names more often when I have no letters.

Or just really rally be great at reminding who someone is - if you have a lot of characters. Melissa Caruso does this great, by repeating the main character’s last emotions / thoughts about someone. Goblin Emperor did it well to.

Blind people want the same thing from an audiobook experience that everyone wants from an audiobook experience. audiobooks are one of those places where the experience between the blind and the cited is identical.

a lot of it has more to do with narrator than it does author, good pacing, and making each character's voice distinctive, different accents for different regions, knowing how to set mood of the text with your cadences. Go look at /r/audiobooks.

Good audio production. People who can read clearly and maintain consistency with their characters. My favorites are Simon Vance, John Lee, Victor Bevine and Scott Brick.

I’m legally blind, so reading is really hard for me. I’m not very picky about what I get. I just want someone to read it. I don’t even care if it’s a robot, so long as it’s bearable to listen to.