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Seeking to improve upon the specifications of the E12 series, the Fiio A5 is a headphone amplifier designed to be used on the go, and thus, provide a hi-fi sonic backdrop to any traveling situation. It utilizes the same combination of opamps as the E12A, but improves upon that model's components to achieve a total harmonic distortion rating that's 33% lower than the aforementioned amp. The A5 also delivers an improved signal to noise ratio of 115 dB, as well as an improved channel balance over models in the E12 series. This is due to the selection of components, along with the utilization of high-precision metal film resistors.
The headphone amplifier also sports an 880 mAh battery which can last up to 13 hours on a 2.5-hour charge when supplied power via the included 5V/2A charger. When charging, the A5 will automatically adjust the amount of current it accepts depending on whether you're using a computer's USB port, a tablet charger, or a cell phone charger. An LED will keep you abreast of the A5's charging status.
Furthermore, the 1/8" headphone jack utilizes a CNC stainless steel ring, rather than copper, which was used in previous models. This, combined with a plastic ring, ensures the termination port is integrated with no gaps whatsoever, giving you a sturdier connection for your headphones. The amp accepts signal through a 1/8" jack located near the headphone jack, and features a switch that allows you to adjust between high and low gain settings.
Key Features at a Glance
Provides 800 mW at 32 Ohms
Offers a MUSES02 and LME49600 Opamp combination
Sports a signal to noise ratio of 115 dB
Features a total harmonic distortion of 0.002%
Utilizes low resistance power management
Provides an 880 mAh 11V battery
Battery lasts for up to 13 hours on a 2.5-hour charge
LED displays charging status
CNC-Milled headphone jack provides sturdier connection
Volume knob designed in the fashion of electric guitars/basses
Sandblasted zirconium finish provides a robust enclosure
In the Box
FiiO A5 Portable Headphone Amplifier
Limited 180-Day Warranty on Battery
Limited 1-Year Warranty on Mainframe
Table of Contents
> 800 mW (32 Ohms, THD < 1 %)
MUSES02 and LME49600
Signal to Noise
≥ 115 dB
< 0.002% (1 kHz)
1 x stereo 1/4" input
1 x stereo 1/4" headphone output
1 x USB