Sennheiser HD 620S Closed-Back Headphones, 42 mm Angled Drivers, 150 ohm

For focused listening at home, the Sennheiser HD 620S combines a closed-back design with an expansive, natural presentation. Its angled transducers are designed to create a broad stereo image, while sound isolation helps keep your music private and reduce distractions around you. That makes it a practical choice for settling in with an album, a game or a podcast without giving up a sense of space in the sound.

The over-ear fit, roomy cups and vented artificial-leather earpads are made for extended listening. A detachable cable and included 3.5 mm-to-6.3 mm adapter add flexibility for wired listening setups.

Key specifications

• Type: Closed-back, wired over-ear headphones
• Model name: HD 620S
• Transducers: Angled 42 mm dynamic transducers with 38 mm diaphragms
• Impedance: 150 ohm
• Frequency range: 20 Hz–20,000 Hz
• Connection: 3.5 mm audio plug, 3.5 mm-to-6.3 mm adapter included
• Cable: Detachable, 1.8 m
• Weight: 400 g
• Earpads: Artificial leather with internal venting

Compatibility & requirements

The HD 620S connects through a 3.5 mm audio jack. The included 3.5 mm-to-6.3 mm adapter supports connection to audio equipment with a 6.3 mm headphone output, giving you a straightforward wired option across compatible listening setups. Its detachable 1.8 m cable can be removed from the headphones, and the closed-back construction helps keep listening more contained in shared spaces.

The 42 mm angled dynamic transducers and 38 mm diaphragms are designed to mimic a speaker-style arrangement, helping create a more spacious stereo image through headphones. What if you could have that sense of space while keeping the listening experience private? That’s the aim of the HD 620S: combine an expansive presentation with the isolation of a closed-back design.

Best use cases

Use these headphones for music, gaming and podcast listening when you want to settle into the detail without opening up your sound to the room. Their isolated, over-ear design also suits streaming or amateur music production in a shared home environment. The closed enclosure helps keep outside distractions at bay, while the angled drivers support a broad, speaker-like impression. For a listening session on the sofa, connect through the 3.5 mm jack, for a compatible home audio output, use the included adapter.

Buyer feedback often highlights the solid-feeling construction, comfort, closed-back design and sound isolation. Impressions of sound and fit are more mixed, so personal preference matters, particularly for longer sessions. The manufacturer describes the earpads as artificial leather, with internal venting and roomy ear cups as part of the comfort-focused design.

Before you decide

What connections are included? The headphones have a detachable 1.8 m cable with a 3.5 mm plug, plus a 3.5 mm-to-6.3 mm adapter for compatible headphone outputs.

Are these open-back headphones? No. The HD 620S has a closed-back design intended to provide sound isolation while maintaining a spacious, natural sound presentation.

What are they suited to listening to? The listed uses include music, games and podcasting. The manufacturer also describes them for streaming and amateur music production.

Buying verdict

The HD 620S is well suited to listeners who want the privacy of closed-back headphones alongside an expansive stereo presentation. Its angled transducers, over-ear fit, detachable wired connection and included adapter make it a considered choice for focused listening across compatible home audio setups.