Fiio E5 Headphone Amplifier

It may look like a Shuffle, but the Fiio E5 isn’t even a PMP.  In actual fact it’s a clip-on headphone amplifier, intended to boost volume from your favorite media player and drive higher impedance cans than might normally work.  With an Apple-style clip, the E5 measures just 44 x 38 x 12.2mm but boasts 150mW (at 16?; or 12MW to 300?) power output with under 0.009-percent distortion at 10mW.
That makes it 30-percent more powerful than its E3 predecessor, despite only being 26g and having a rechargeable battery good for 20hrs use.

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