Fiio E11 Portable Amplifier
Never ending innovation from Fiio has brought us the Fiio E11, the latest and perhaps most mature amplifier from Fiio yet. I think Fiio deserves to get some credit not only for continuing effort to push the quality of their products, but also on several aspects of the design of the Fiio E11. Most noticeable is the volume knob design which protects from accidental turning of the knob (it happens, believe me), yet still providing easy adjustment of the volume. Then you have the easy to open battery compartment, similar to the battery compartment design on mobile phones. The use of removable Nokia-style Lithium Ion batteries is also the first I’ve seen on portable amplifiers. Although many portable amps these days come equipped with Lithium Ion batteries, the E11 is the first one that offers easy exchange of the batteries, so you can carry spare batteries and easily double the battery life. The dimension of the amp is small and compact, with a high build quality plastic enclosure giving a very solid and lightweight packaging for the amplifier circuitry. Ergonomically, this is one of the best portable amplifier I’ve used.
Continuing in the tradition of the previous Fiio products, the E11 also comes with a bass-boost switch, though labeled as “EQ” on the E11. They also added a Low/High gain switch, as well as a low/high current switch (located below the battery on the battery compartment). The level of power you get from the E11 is really shocking as I find this amplifier to have enough power to drive the newly released Hifiman HE-500 Orthodynamic headphone (89dB, 50 Ohms) to ear deafening levels.
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