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Fiio A5 Portable Headphone Amplifier

-Utilizes MUSES02 & LME49600 op amps, resulting in near-zero distortion at .00003%
-USB 'smart-charge' circuit allow charging from laptop/PC, tablet or smartphone
-High/Low gain switch and a bass boost

It's All In The Details
FiiO has strived to constantly progress and innovate with fresh ideas in the portable amplifier market since its own entry. With the A5, we continue this tradition by striving to significantly improve over our previous products, the E12 series. Every last detail of the E12 series has been reworked and revamped so as to create a new headphone amplifier that not only maintains the E12 series??strengths, but also rises above them for an even better product.

Model Name/Number: A5??A5121??
Color Available: Titanium / Black
Weight: 168 g (incl. battery)
Dimensions: 124 mm??5.5 mm??4.5 mm
Audio Input: 3.5 mm stereo jack
Headphone Output: 3.5 mm stereo jack
Volume Control: ALPS Potentiometer
Bass Boost: 1 Level
Drive Ability: 16~300 ?? (recommend)
Power Input: recommend DC5V 2A
Battery Capacity: 880 mAh
Battery Life: ??13 h
Output Power: ??00 mW (32 ??/THD??%), ?? 150mW??00??/THD??%??
Charging Time: ?? h??C5V 2A??
THD+N: ??.002??(1 kHz)
Output Impedance: ??.3 ??
Frequency Response: 10 Hz~90 kHz??3dB??nput: 220mV??SNR: ??115dB (A-weighted)
Input Sensitivity: 5.6 V (GAIN=L), 1.15V (GAIN=H)
Max. Input Level: ?? Vrms
Crosstalk: ?? 75 dB
Channel Imbalance: ??.3 dB
Gain: 13 dB (GAIN=H), 0 dB (GAIN=L)
Bass Boost Range: >5 dB (BASS ON)
Peak Output Voltage: 14.96 Vp-p
Max. Output Current: 250 mA??or reference??/p>