Sennheiser HD 820

View online review whf.cm/HD_820 £1399 Closed back headphones may be better at blocking noise – in and out – but they tend to compromise on performance as a result. Why? A drive unit fires as much sound backward as it does forward. In an open arrangement, this rearward radiation simply escapes out into the world, causing little sonic damage to sound travelling towards the ear. In a closed pair of headphones this rearward sound is trapped in an enclosure and its energy causes resonances. It can even bounce back through the drive unit and distort the forward-firing soundwave. Over the years, manufacturers have tried different techniques to absorb the rearward sound, to varying degrees of success. Take a look at the HD 820’s earcups and you will find Sennheiser’s solution–a concave…

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What Hi-Fi? (Digital) - 1 Issue, February 2024

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