i bought the Dolby Atmos tool in windows in Settings, Sound, Your Headphone, scroll to bottom for 3rd party tools. I also use FXSound for EQ settings. Very easy and free. I can now hear footsteps better.

grandpa, whats a record?

depends:

for airpod max, the sound is same as the stock fabric.

for Steelseries Arctic Pro, sheepskin leather sounded better than stock fabric.

for SennHeiser HD800s, leather caused a tighter fit because its thicker cushion.....that changed the sound dynamic vs the stock fabric. I went back to fabric because HD800s are known to be loose fitting - less clampy, whcih is why its the best headphone out there. can wear it for 12 hours and not notice it.

For yours, you may already be accustomed to a clampy feel.

i got real sheepskin leather for other headphones and it feels good. If you are against killing animals for your selfish personal needs then get the egg protein leather.

https://www.amazon.com/Premium-Sheepskin-Compatible-High-Density-Excellent/dp/B07R2FKMTD/ref=sr_1_3?crid=2C88I9PSYI2X5&keywords=lcd2+headphones+ear+pads&qid=1667153184&qu=eyJxc2MiOiIyLjA4IiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D&s=electronics&sprefix=lcd2+headphones+ear+pads%2Celectronics%2C144&sr=1-3

Need to use paragraphs. Hard to read. Did you have a question??

What dac or amp?

My Fiio uses Bluetooth 5.0. It sounds great connecting to iPhone 11. Almost as good as AirPodMax.

New iPhones have Bluetooth 5.3 which helps with battery performance.

The rumor is the next iPhone will have Qualcomm’s LOSSLESS Bluetooth chip. That will put wires out of business.

What audio interface is this? For example, On Apple Music , it tells you if its lossless on their UI.

Hard to see the headphones. portrait mode on camera may help.