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FiiO A5 Portable Headphone Amplifier


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Found it cheaper? Click here. SKU: FIIOA5
Ex VAT: 90.83

FiiO A5 combines all the best qualities of the former E12 and E12A units in one unit including the highly effective MUSES02 and LME49600 opamp pairing.

Available - Ships within 2-3 days.

Condition:Brand new in original retail packaging

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Warranty length 1 Year
Brand FiiO

Tech Specs

Audio Input: 3.5mm stereo jack
Headphone Out: 3.5mm stereo jack
Vol Control: ALPS Potentiometer
Bass Boost: 1 Level
Drive Ability: 16~300Ω


Output: >800mW (32Ω, THD:<1%)
Output 300Ω: ≥ 150mW (THD:<1%)
THD+N: <0.002% (1 kHz)
SNR: ≥115dB (A-weighted)
Output Impedance: <0.3 Ω#


Freq Response: 10Hz~90kHz (-3dB,220mV)
Low Gain Sensitivity: 5.6V
High Gain Sensitivity: 1.15V
Max Input Level: >8 Vrms
Crosstalk: ≥ 75dB
Channel Imbalance: <0.3dB
Gain: 13dB (High), 0dB (Low)
Bass Boost: 4dB (BASS ON)


Peak Output Voltage: 14.96 Vp-p
Max Out Current: 250mA (reference)
Power Input: DC5V 2A
Battery Capacity: 880 mAh
Charging Time: <3hrs (DC5V 2A)
Battery Life: ≥13hrs


Dimensions (HWD): 124 × 65.5 × 14.5mm
Weight: 168g

Product Description

FiiO A5 portable headphone amplifier uses the E12A’s hugely successful MUSES02 + LME49600 opamp combo. Featuring high precision metal film resistors in all major components along with a better design, A5 achieves a THD rating of almost 0% and improved signal-to-noise ratio of 115dB.

Based on E12

FiiO has strived to constantly progress and innovate with fresh ideas in the portable amp market. With the A5 Headphone Amplifier, they continue striving to significantly improve the previous E12 series. Every intricate detail has been revised and renewed to build a fresh headphone amplifier that preserves the E12 series' benefits but also exceeds them for an even mightier product.

Clean Potent Power

For sound quality, clear and effective power is of extreme importance. A5 incorporates a highly potent, low-defiance power system along with twin +/-11V power supply. This is a huge difference to the E12A which supplied 7.4V and affords the A5 a significant power reserve, unprecedented for a portable amplifier. Finally, a +/- symmetrical power supply allows for the elimination of coupling capacitors leading to reduced distortion and increased dynamic range.

For IEMs/ Headphones

Beyond just getting output power near the E12 with 800mW at 32 Ohms, you also get the E12A's exquisite abilities in reproducing music. With the low/high gain switch you can enjoy the A5 with all kinds of headphones from the most sensitive IEMs to the most power-hungry headphones.

Longer Battery Life

An 88OmAh 3S battery is used. A5 can automatically adjust the amount of current to the battery when charging by detecting your particular charging equipment. Whether that is a PC USB port or your cell phone/tablet's charger, you can be assured the A5 will choose the safe and appropriate charging speed. With a 5V charger, the battery can be fully topped up in 2.5 hours, faster and more convenient than rivals, giving the amp a lengthy 12-hour life.

Charging Indicators

The A5 has a LED specifically designed to let you know device's charging status immediately. The LED blinks at various rates in correlation to the current when charging so you can instantly determine the charging speed. There is also a working status indicator that immediately notifies you to whether the unit is on or off.

CNC Milled Connectors

No detail down to the headphone connector has been overlooked. FiiO used a CNC stainless steel headphone connector ring for the first time, replacing the previously used copper. A plastic ring is pressed into the gap between this connector ring and the rest of the body, ensuring seamless integration. Aesthetically pleasing, the headphone connector is more robust owing to the absence of gaps and use of harder SST.

Functional 45 degrees

Inspired by string instruments, fifty-six 45° lines are etched onto the volume knob's surface. The laser inspired red ring that adorns it gives a distinct, characteristic look. Instead of the typical brushed metal finish, the A5’s aluminium body has a sandblasted finish in which abrasive material is forcefully sprayed onto the surface with highly compressed air ensuring a more durable surface. The anodised paint gives a robust and unique look while making it last longer.

Key Features

- Professional MUSES02 + LME49600 op-amp combo
- Lengthy 12-hour battery life on a full charge
- Quick 2.5-hour charging, other charging modes available
- High voltage supply of +/- 11V

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