Exported PP Audio sounds great on my Sony MD-7506 headset sound but muffled on Airpods Pro

I have a voice over narration track (44100 Hz) from ElevenLabs that sounds great in Premiere Pro 24.3 (after using Enhance Audio feature in Essential Sound panel) when listening through my Sony MD-7506 headset. But when I export the audio out of Premiere, even though I kept the same settings (44100 Hz),  that same audio sounds muffled when played back as an mp3 file on Airpods Pro. Even exporting as Wav file doesn't change the muffled sound which is really noticeable when listening with Airpods Pro.  But not on other devices like my Sony headset or on speakers.