Edifier Stax Spirit S10: Two-minute reviewSince I started testing the Edifier Stax Spirit S10, I’ve dropped the words ‘planar magnetic’ into conversation when describing them a few times. Given the number of blank looks I received at the phrase, I feel it’s important for me to explain it, given that it is the key selling point of these premium earbuds – and they may still enter our best earbuds buying guide as ‘best planar magnetic buy’ or similar.A planar magnetic
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