Audiophilepure

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“The whole tube measures 41.5mm long, so not as long as the whopping 80mm of the FiiO FA9, enough to allow the full bass to develop. On the other hand, the high-frequency driver was put as close as possible to the ear canal, to ensure low distortion levels.
In the middle of everything, you find a new physical+electronic three-way crossover, in charge of all that work. It gains some help from FiiO’s patented balanced pressure relief technology (basically two vents) and some tweaks in the internal acoustic structure.”

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