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Koss PRO4AAAT review

Despite passable looks, these headphones from Koss are heavy, cumbersome and with a poor, ill-defined sound that's best avoided Tested at £155.00

What Hi-Fi? Verdict

Despite impressive looks, these Koss's are poor performers


  • +

    Generous bass


  • -

    Hard, thin sound

  • -

    uncomfortable to wear

  • -


Compared to close rivals, these cans from Koss feel heavy and cumbersome.

The rubber ear pads aren't very comfortable: ironic, because these headphones are comfortably the poorest performers we've seen for a while.

Listen to Eminem's Same Song and Dance and it sounds like it was recorded from the confines of a size five shoebox: there's a hard edge that renders long-term listening impossible.

The only saving grace is that bass is generous, but still, they're way behind their rivals

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What Hi-Fi?
What Hi-Fi?

What Hi-Fi?, founded in 1976, is the world's leading independent guide to buying and owning hi-fi and home entertainment products. Our comprehensive tests help you buy the very best for your money, with our advice sections giving you step-by-step information on how to get even more from your music and movies. Everything is tested by our dedicated team of in-house reviewers in our custom-built test rooms in London and Bath. Our coveted five-star rating and Awards are recognised all over the world as the ultimate seal of approval, so you can buy with absolute confidence.

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