I decided to do some super unscientific comparison between my AirPod Pros and my Sennheiser HD 4.40 BT headphones. Ignoring the ANC aspect of the memePods Pro for this comparison.

The HD 4.40 BT feel much much harder to drive than the memePod Pros. You won't unlock the HD 4.40 BT's full potential without a decent soundcard.

Bass is much more present on memePod Pros. HD 4.40 BT sounds much more natural and more clean neutral audio if that makes sense.

https://music.apple.com/gb/album/you-know-my-name/1445292673?i=1445292676 - This song sounds completely different on both. On the HD 4.40 BT it sounds a hell of a lot more neutral and not bassy. On the memePod Pros it sounds quite a bit more bassy.

Other songs you'll see a big difference on is:

https://music.apple.com/gb/album/no-time-to-die/1498647640?i=1498647654 - This song is very quiet on the Sennheisers.

https://music.apple.com/gb/album/extreme-ways-jason-bourne/1134740021?i=1134740298 - Night and day difference between AirPod Pros and the HD 4.40 BT. It's like listening to 2 different songs.

And that's the overall theme I got: the HD 4.40 BT sounds warm, natural, earthy sounding. The memePods Pro feel like they're biased towards Bass, a little bit harsher sounding, and just generally easier to drive.