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Fiio A3 - Portable Headphone Black Amplifier 20 to 20,000 Hz Frequency Response




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Fiio A3 - Portable Headphone Black Amplifier 20 to 20,000 Hz Frequency Response

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The black colored version of the Fiio A3 - Portable Headphone Amplifier is designed for mobile Hi-Fi listening applications and is compatible with a wide range of headphones, earphones, and other in-ear monitoring systems. The all-aluminum alloy body and chassis of the amplifier shields against electromagnetic interference and the built-in rechargeable 1400 mAh battery provides approximately 16 hours of operation on a four-hour charge via mini USB port. For I/O, it features an 1/8" stereo auxiliary input and an 1/8" stereo headphone output.

The device utilizes an OPA1642 as the voltage pre-amplifier and an AD8397 power amplifier to deliver a maximum power output of 450 mW at 16Ω (270 mW at 32 Ω) with a frequency response of 20 to 20,000 Hz, a signal-to-noise ratio of equal to or greater than 108 dB, and a T.H.D. of less than 0.004% into loads between 16 and 150Ω.

For controls, the amplifier includes a low-high gain toggle switch, a rotary volume control, and a fully discrete bass boost circuit that can be bypassed to decrease interference and lower the overall noise floor.

Condition New
Brand Fiio
Free shipping Yes
Special Price From Date No
Special Price To Date No
Features No
  • Fiio A3 - Portable Headphone Amplifier (Black)
  • USB Charging Cable
  • Limited 1-Year Warranty
Manufaturer Part Number A3B
Input 1/8" (3.5 mm) stereo aux
Gain GAIN=L: Sensitivity = 2.4 V
GAIN=H: Sensitivity = 0.8 V
Output 1/8" (3.5 mm) stereo headphone
Volume Control ALPS potentiometer
Frequency Response 20 to 20,000 Hz
Crosstalk ≥ 72 dB (Gain=H)
Signal to Noise Ratio > 108 dB
THD 0.004% at 1,000 Hz
Channel Imbalance <0.5 dB
Balance Control GAIN=L: Balance = 0.3 dB
GAIN=H: Balance = 0.2 dB
Charging Time 4 hours
Power Supply Mini USB Port
Battery Capacity 1400 mAhH
Operating Time Up to 16 hours
Power Input 5 VDC at 500 mA
Input Impedance 16 to 150 Ω
Output Impedance <0.2 Ω
Output Power 270 mW (32 Ω)
450 mW (16 Ω)
Output Current Limit 92.6 mA
Output Voltage 8.67 Vp-p
Dimensions 3.59 x 2.20 x 0.51" (91.2 x 56.0 x 13.0 mm)
Weight 3.2 oz (92 g)

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