FiiO A3 - Portable Headphone Amplifier
Цена: 139 лв. с ДДС за 1 брой
Производител: FIIO


Product Highlights

  • 450 mW at 16Ω Power Output
  • Fully Discrete Bass Boost Circuit
  • Approximately 16 Hour Run Time
  • 1400 mAh Rechargeable Battery
  • 20 to 20,000 Hz Frequency Response
  • All-Aluminum Alloy Body
  • Shields Against EM Interference
  • OPA1642 Voltage Pre-Amplifier
  • AD8397 Power Amplifier
  • Low - High Gain Toggle Switch

FiiO A3 overview

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.


nput 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)
Packaging Info
Package Weight 0.5 lb
Box Dimensions (LxWxH) 5.2 x 5.2 x 1.0"



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