Apple dongle measures accurate as any other dac should be. So if you are hearing differences, probably your other dac isn’t measuring accurately and hence they sound different. And difference can be a an improvement or downgrade depending on how you see that.

An yet some people believe it is true

Is AirPods Pro in terms of sound better than arias ?

Harman Kardon orange headphones

Exactly this

How can one thing vibrate 2000 times and second and 80 times a second at the same time ? Answer is it does not.

Try superpositioning two waves of 80hz and 2000hz and then you get a pattern of vibration which doesn’t look like 80 and 2000 but it’s a pattern which is the resultant of 80 and 2000. At some parts it’s added I amplitude (at time periods both parts are in the positive cycle and is present in the same time slice. Read superposition to undertand exactly the way in which how this pattern is formed.

Then this pattern of vibration reaches your ear where again different haircells deflect differently as they have different thresholds to produce an auditory signal.

You almost understood it but I think if you look deeply superposition once again you would understand how this meme is meaningful and deeply true. I had a hard time in understanding this for long, and one day I got in!!

Again, not everyone wants to DIY. Not everyone has the skills and time to DIY. Parts of most electronics are reallly cheap compared to the whole device price. But a layman cannot simply suddenly start repair it.

To replace the back glass almost the whole phone needs to be assembled again after taking apart if m not wrong. That’s really lot of work and the glass itself is of a much better quality than other brands. Also, the service ensures waterproof once again. You can have it replaced locally outside apple but then the risk stays