The Sound is great

The sound is crisp

They were so soft sounding, you could not hear the movie.

The sound is great, and they are very durable.

Nice sound

He really likes them and says they have a good sound when he is listening to music

The sound is good.

They fit her head comfortably and perfectly, fit over her ears nicely, and the sound is just right.

so I connected it to my phone and sure enough, no sound

We then had to move the "3.5mm plug" in and around several times to finally get barely audible sound from both earphones

I mean (for example) if your device would want to be twice as loud as is safe for long term hearing, the sound in headphone would get louder and louder as you adjust the volume from silent to maximum in the kindle until it it reached the half way mark, and then as you increased the volume on the kindle the volume your child hears would remain constant

Was worried sound might be too quiet with the limitations, but not an issue at all

The sound is perfect not to loud so they dont hurt his ears