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Douk Audio U3 PRO HiFi Mini Class A Headphone Amplifier – High-Power Desktop Amp for 18-600Ω Headphones, 1500mW Output, 3.5mm & 6.35mm Jacks, DC 5V

KWD 23
Brand
Douk Audio
Weight
165 g
– 1 +

Special Features

  • High-Power Output for Versatile Headphone Compatibility: Delivers up to 1500mW at 32Ω, effectively driving headphones with impedances ranging from 18Ω to 600Ω, ensuring optimal performance across various models.
  • Innovative Voltage Boost Circuit: Features a built-in voltage boost circuit that maintains a high operating voltage of ±14V from a DC 5V input, resulting in ultra-low distortion and a warm, delicate sound signature.
  • Classic OP+BUF Architecture with Replaceable Op-Amps: Utilizes OP42 and BUF634 in a pure DC amplification circuit; the pluggable op-amp socket design allows for easy upgrades with models like OP17, AD797, AD843, AD847, and OPA627, offering customization for audiophiles.
  • Enhanced Compatibility with Multiple Inputs and Outputs: Equipped with stereo L/R RCA and 3.5mm AUX inputs, along with 3.5mm and 6.35mm headphone outputs, providing seamless integration with various audio sources and headphones.
  • Compact and Exquisite Design: Measuring just 689232mm, this mini amplifier boasts an elegant appearance, making it an ideal addition to any home or office desktop audio setup.

Description

Warm Tips:
1. Without DC 5V power adapter, please prepare an original high-quality power adapter yourself (DC 5V ≥1A). Note: the input voltage over 5V will result in damage.
2. The U3 PRO won't work well if the current of the power adapter is below 1A.
3. The 3.5mm and 6.35mm headphone jack can output at the same time. Please don't use RCA and AUX input at the same time, otherwise audio mixing will be caused.

Parameters:
Audio input: stereo L/R RCA, 3.5mm AUX
Audio output: 3.5mm/6.35mm headphone jack
Output power: ≥1500mW (32Ω)
Matched headphone impedance: 18-600Ω
Max output amplitude voltage: ±14V
Frequency response: 20-30KHz
SNR: ≥110DB
Input voltage: DC 5V (≥1A)
Dimension (W*D*H): 68*92*32mm / 2.68*3.62*1.26in
Net weight: 164g / 0.36lb
Package weight: 300g / 0.66lb

Packing List:
1* U3 PRO Headphone Amplifier
1* USB to DC Cable

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