The way the top panel slopes to form a lip at ... impressive full-frequency response and a way bigger sound than seems feasible then this Sennheiser has you more than covered.

Now let’s find out how they sound using the FiiO M23 digital audio player streaming hi-res audio from Tidal. When Sennheiser says the HD 620S are a closed-back design that sound like open-back ...

The amount of transparency can be set using the excellent Sennheiser Smart Control app for iOS and Android devices. The app also provides a five-band graphic equalizer for shaping the sound to ...