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FiiO A5 Portable Headphone Amplifier, Titanium
Utilizes MUSES02 & LME49600 op amps, resulting in near-zero distortion at .00003%
USB smart-charge circuit allow charging from laptop/PC, tablet or smartphone
Ability to drive high-impedance headphones including most planar magnetic models
Frequency Response- 10 Hz~90 kHz; Drive Ability- 16~300 Ω (recommend); High/Low gain switch and a bass boost
Large capacity Li-polymer battery delivers +/- 11 volts, with total output power up to 800mW at 32 Ohms
The new FiiO A5 achieves nearly the same powerful output of the original E12 Mont Blanc unit but with improved channel balance and a lower noise floor that's ideal for driving highly sensitive in-ear headphones on the 'Low Gain' setting. The A5 topology is a robust 'analog-only' [ i.e., no digital DAC connectivity] portable headphone amp design capable of delivering a whopping +/- 11 Volts of clean power, so the A5 can also easily drive even very power-hungry full size headphones on its 'High Gain' mode, including many recent high-end planar magnetic audiophile models. The FiiO A5 headphone amp charges via USB connection from any 5 Volt supply via a laptop computer, tablet or most smartphones and takes about 3 hours to fully charge up. Our headphone.com A5 review unit arrived fully charged and ready to rock right out of the box. The battery run time of the FiiO A5 unit rates somewhere around 12-13 hours, so you'll be able to keep the music flowing without worries when you're listening on the go all day or during those long cross continental flights. In addition to the High/Low gain switch, the A5 unit also has a bass boost button, so it does allows for some audio customization for your particular headphones and listening tastes. A high-quality smooth operation ALPS potentiometer graces the front panel along with the gain switch, plus 3.5mm line input and headphone outputs placed side by side. The super-slim A5 amp housing contains the bass boost switch on the side panel next to the USB charging connector. The top case shows off two mini LED lights, a deep blue LED light indicating on/off and a red light showing the battery charging status. The A5 amp case itself is an extremely slim-profile, sandblasted grey aluminum chassis and it measures approximately 2 1/2" inches wide by 4 1/2" inches long and only a 1/4" thick - so no doubt, it's a really small little box!