Suitable for headphones ranging from 16 to 150 Ohms, the A3 is potent enough to drive all but the most power hungry headphones. Use the low gain setting with high sensitivity IEMs, or switch it to high gain for full size headphones.
Audiophile Grade Design
The A3 offers superior sound quality through expertly selected components and design. Its pre-amplifier section is based on the TI OPA1642, with excellent layering, midrange resolution, and high frequency extension. The power amplifier section relies on the AD8397 for great bass control and smooth drive characteristics.
Sophisticated Bass Boost
A fully discrete bass boost circuit increases output by 3.5dB at 60Hz, producing a gentle swell of low end energy that preserves the overall sound field. The bass boost circuit is completely bypass when off to ensure low noise floor and purity of sound quality.
The A3 is handsome with an all aluminum body and chassis. Not only is it solid and sturdy, it also provides superior shielding from EM interference. A knurled volume knob is mated to a smooth turning ALPS potentiometer. Toggle switches are used for enhanced reliability and are easier to operate. A 1400mAh internal battery powers the A3 for up to 16 hours of use.
- Audio Input: 3.5 mm stereo Jack
- Headphone output: 3.5 mm stereo Jack
- Drive ability: 16 - 150 Ohm
- Power input: recommend DC5V 1A
- Battery Capacity: 1400 mAh
- Battery Life: 16 hrs
- Charging Time: 4 hrs
- THD: 0.004% (1 kHz)
- Output Impedance: 0.2 ohm
- Frequency Response: 20 Hz - 20 kHz
- Weight: 92 g
Warranty:1 Year Warranty
- Hi-Res Audio Certified Titanium Edition FiiO A3 - Unlease power and audio quality for headphones ranging from 16 to 150 Ohms. Gain switch for matching output to headphone power needs.
- Renowned sound quality through expertly selected components and design, utilizing OPA1642 preamp and AD8397 amp section.
- Fully discrete bass boost circuit increases output by 3.5dB at 60Hz, with bypass when off.
- Handsome all aluminum body and chassis is sturdy and shielding against EM interference.1400mAh internal battery powers for up to 16 hours of use.
What you get:One  FiiO A3 Portable Headphone Amplifier