Final Audio A4000 Earphones (Open Box) headphone 3.5mm durable headband and a flexible

durable headband and a flexible swivel

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Sporting a diameter of just 5

Dynamic & Balanced Armature

Fixed cables

Final Audio A4000 Earphones (Open Box) headphone 3.5mm durable headband and a flexibleA4000 The staple for this price range features a great designed driver unit [f Core DU] which realizes astonishingly clear sound For the A4000 to achieve the impossibly high quality sound for this price range requires development and production facility. The 6mm diameter dynamic driver requires not just parts, but a total redesign of everything, including the production machinery. Sound design was conducted based on our proprietary sound evaluation