Also new in Stiftung Warentest's constantly updated headphone database: 16 current Bluetooth headphones - including in-ears, open-ears and headband models. One in-ear reduces ambient noise perfectly, another fails in this test point. The devices also perform very differently in terms of wearing comfort: many fit well or very well, others fall out of the ear easily...

The Marshall is easy to operate using a joystick and sits comfortably on the head thanks to its low weight. The Monitor III is also one of the over-ear headphones with a particularly long battery life. However, the manufacturer still needs to work a little on the sound and noise cancellation to be at the top of the league.

Admittedly: I'm a big fan of the design of Marshall devices. Whether it's the manufacturer's headphones or Bluetooth speakers. This leather look with golden details looks pretty damn classy. This also applies to the Marshall Monitor III ANC. It's just a shame that the build quality can't quite keep up and, in my opinion, doesn't do justice to the high price...