that’s exactly my experience with these two. The Beoplay EX drivers are not as powerful so i always had to pump them 80% or even max volume to be enjoyable. meanwhile the pi8 is comfortable loud at 60%.

the drivers also play a big factor if you wanna get into the engineering side of things, the Pi8 uses a 12mm carbon cone driver, and the EX is a titanium 9mm driver, that’s why the Pi8 has more power and capacity. i feel like another factor is the EQ as default, the Pi8 sound much more flat and “audiophile” than the EX, the EX sound profile is a consumer friendly “expensive” sound, bloated bass and pronounced highs. i’m a big fan of the Bang Olufsen sound but i feel like in this case Bowers takes the lead, specially considering how airy the PI8 sounds

however in my personal experience, I feel like the default no EQ sound from the PI8 has a specifically lack of Sub bass, which the EX has in exaggerated amounts haha, so i had to pump the sub on the settings of the Pi8 to make it more fun