The maximum volume measured on the radio shop's sound level meter is 80 dB, which is actually quite loud, even though the level meter sits unnaturally deep in the headphones. As far as I can tell, kids like lower volume levels than adults, so I would actually support an even lower maximum volume for kids' phones. The audio fidelity is not extreme, but the bass is enough for watching movies. I admit that I had the worst headphones. I don't think my daughter will notice. On the other hand, I won't use them to save my own ear while playing VST piano from a midi keyboard. I wouldn't recommend using any headphones to beat aircraft noise unless they have noise-cancelling capabilities. Airplanes are quite noisy, and using higher headphone volumes to overcome the ambient aircraft noise would not be a good idea. Consider noise cancellation. They fit my 6 year old daughter and at least adjust reasonably.
Black JBL T450BT On-Ear Wireless Headphones with Built-In Mic and Remote
287 Review
Bundle: Sony MDR7506 Closed Ear Headphones with Knox Gear Compact 4-Channel Stereo Headphone Amplifier - Professional, Folding Design (2 Items)
110 Review
Enhance Your Audio Experience with Sony WH-1000XM4 Wireless Headphones and Knox Gear Mount Bundle
196 Review
π« Sennheiser HD-201 Lightweight Over Ear Headphones - Discontinued Model
185 Review
Upgrade Your Audio Experience with Samsung Galaxy Buds+ Plus: True Wireless Earbuds with Improved Battery and Call Quality in White, including Wireless Charging Case and Velvet Pouch.
320 Review
Black Huawei FreeBuds 3 Wireless Bluetooth Earbuds for Superior Sound
276 Review
π§ Huawei FreeBuds Pro Earbuds with Advanced Noise Cancellation, Bluetooth 5.2, and 3-Mic System for iOS and Android (Carbon Black)
295 Review
Headphones Sennheiser CX 300-II, black
318 Review