What is the quietest robot vacuum I've tested?

The Dreame L10s Ultra at 62 dB is the quietest vac I’ve tested — quiet enough to run during a meeting or while watching TV without cranking up the volume. Most robot vacs in this class run in the high 60s to low 70s, so that difference matters in open-plan homes or overnight runs. It’s not silent, but it’s the least intrusive vacuum I’ve tested for noise.