By its algorithm-based nature, active noise cancellation has a difficult time replicating true-to-source sound. Thus Astell&amp;Kern skips it altogether in their AK UW100MKII true wireless earbuds. They claim to have passive noise cancellation that performs close to active solutions, as well as a built-in 32-bit DAC that works with full-range Knowles balanced armature drivers to deliver outstanding clarity. AptX adaptive over Bluetooth 5.2 provides the best possible wireless audio quality, and the batteries last for up to 9.5 hours before needing a top-off in the charging case, which boosts total battery life to 29 hours.