What is Multiroom?

Multiroom means a speaker can join a group playing on other speakers in different rooms, so the same app or a voice command fills the house. It is a network feature rather than a sound quality one, and it only matters if you plan to run several speakers. Among the audio brands here, none of them offer it: Audio-Technica, Baseus, Beats, beyerdynamic and Blackview all list no multiroom support. Grouped playback would need extra third-party hardware, so read the speaker's own app notes before buying a pair with that plan in mind.