I’ve listened to thousands of hours of audio books and this is my go to player for sure. I tried a couple other ones again recently and ended up coming back to this one. Simple and easy to use. It does have a problem moving books occasionally if they are in the root directory and not a sub folder. I just make sure my books are in sub folders when i get them.

I’m not an engineer, or have any real qualifications on the subject. But I’m guessing you would want to cut all transmissions you can from a stealth jet.