
Compared to classic in-ear headphones, the A30 is designed more for relaxation than audiophile precision, which is also evident in the pink noise measurement. The lower mids are a little too weak, which means the A30 lacks a bit of punch. Otherwise, the sound is warm, soft and pleasant, making it well suited for sleep music, nature sounds or quiet audiobooks. The Sleep A30 is therefore less suitable for demanding music sessions, but that is not what it is designed for.
The active noise cancellation works well and effectively blocks out low-frequency noise such as fans or traffic, which also works really well on aeroplanes. It doesn’t create completely silent nights, but it does create a much more pleasant noise environment, and loud snoring can also be significantly reduced.
The headphones do have some weaknesses when it comes to phone calls. In quiet environments, the quality is satisfactory, but background noise can be heard unfiltered during conversations. Incidentally, the call function is disabled in the factory settings and must first be enabled via the app.
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