Sennheiser's HD 600 range of audiophile headphones gets a surprise new addition

Sennheiser HD 620S headphones
(Image credit: What Hi-Fi?)

Sennheiser has been busy in 2024 and has already launched several new wireless headphones, including the five-star Momentum True Wireless 4

At High End Munich 2024, the company has unveiled yet another new pair. The HD 620S are a new addition to Sennheiser’s much-loved HD 600 range, but instead of being open-backed, which has been the norm for this range, they are actually a closed-back design.

They use a custom-tuned 42mm driver made at Sennheiser’s transducer base in Tullamore, Ireland. The company claims a “modern, airy signature that balances honesty with deep and articulate bass.”

Sennheiser HD 620S headphones

(Image credit: What Hi-Fi?)

With the HD 620S, Sennheiser has attempted to isolate the listener but still maintain some of the character of open-backed headphones. They use an angled baffle for improved airflow and to mimic the behaviour of open-backed designs without the boxy sound you can get from closed-back alternatives.

The design also features a metal-reinforced headband and earcup housings with a steel plate on the outside which manages internal reflections in an attempt to keep the sound signal as pure as possible.

In the box you get a storage pouch and they also come with a 3.5mm jack attached and 6.3mm adapter. An optional 4.4mm balanced cable will be released later this summer.

The Sennheiser HD 620S are available to pre-order now and start shipping on June 6th for £300 / €350.


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Andy Madden

Andy is Deputy Editor of What Hi-Fi? and a consumer electronics journalist with nearly 20 years of experience writing news, reviews and features. Over the years he's also contributed to a number of other outlets, including The Sunday Times, the BBC, Stuff, and BA High Life Magazine. Premium wireless earbuds are his passion but he's also keen on car tech and in-car audio systems and can often be found cruising the countryside testing the latest set-ups. In his spare time Andy is a keen golfer and gamer.