The FiiO FA9 is a HiFi earphone that expresses Fiio’s ambition in the market for high-end universal in-ear headphones with 6 drivers, many customizations, and more specifically, Fiio FA9 allows users to adjust from impedance to bass/treble via the new tuning switch system. FA9 has very good machining quality, clear headshell to see the magnificent interior, acrylic used by Fiio …
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