I had a pair of ESP9s several years ago, I rather preferred them to my Stax Lambdas (original version). I.thought the Koss were incredibly smooth compared to a slight grain or tizz in the Stax including a splashy or over-shimmery effect on cymbals. The Koss were heavy and the vinyl ear cups got sweaty, which is I think why I sold them. Would love to try them again though.
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