Not necessarily, but for the best effects yes. You can use head related transfer functions (HRTFs) to simulate spatial audio with just one driver per ear. Gra

Not necessarily, but for the best effects yes. You can use head related transfer functions (HRTFs) to simulate spatial audio with just one driver per ear. Granted the effects aren’t as significant as multi-driver setups, I was able to get a convincing spatial audio demo working with in-ear devices for an Audio Tech course project back in school.