After a few weeks, I realised sound quality of M2 MacBook Air is relatively great than M1 MacBook Air. Somehow sounds are coming from monitor. I was surprised to see build in speaker on M2 MacBook Air are at hinge as attached photo.
That’s why I felt that sounds are coming from monitor, it means the sound from speaker has been reflected on monitor.
At same time, number of build in speaker are double (from 2 to 4) and are supporting Dolby Atoms. Playing some music on Apple Music are compatible with Dolby Atoms. So I could feel good quality sounds as spatial one.