Price: $41.99
(as of Aug 06, 2024 07:42:55 UTC – Details)
Product Description
Versatile Headphone Support
26V high voltage for clear, noise-free audio with high-impedance headphones like HD580/HD600/HD650
Class A Amplification
Delivers a warm, detailed sound, enhancing the listening experience.
Easy Upgrades for Audiophiles
Customizable sound quality with the convenience of pluggable op amps.
Compact and Cost-Effective
Small size with powerful performance, an affordable choice for audio enthusiasts.
1 Powerful and Clear Sound 2 Rich and Warm Audio 3 Pluggable Op Amp Design 4 Mini Hi-Fi Headphone Amp
1*U3 Headphone Amplifier; 1*USB to DC Cable; 1*6.35mm to 3.5mm Headphone Adapter
1 Front 2 Back 3 Side 4 Top 5 Packing List
Technical Specifications
Audio input
stereo L/R RCA
Audio output
6.35mm headphone jack (with 6.35mm to 3.5mm adapter)
Output power
≥1300mW (32Ω)
Matched headphone impedance
18-600Ω
Frequency response
20-30KHz
Signal to noise ratio
≥110DB
Max output amplitude voltage
25V
Input voltage
DC 5-20V
Dimension(W*D*H)
67*93*30mm / 2.64*3.66*1.18in
Net weight
169g / 0.37lb
Package weight
210g / 0.68lb
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Customer Reviews
4.3 out of 5 stars
692
4.0 out of 5 stars
15
4.4 out of 5 stars
26
3.8 out of 5 stars
55
4.1 out of 5 stars
248
4.3 out of 5 stars
1,003
4.3 out of 5 stars
31
Price
$41.99$41.99
$56.99$56.99
$49.99$49.99
$64.99$64.99
$39.99$39.99
$99.99$99.99
$47.99$47.99
Type
Digital Headphone Amp
Balanced Headphone Amp
Vacuum Tube Headphone Amp
Direct Heated Tube Preamp
Line Level Booster
Tube Preamp & Headphone Amp
USB Gaming DAC & Headphone Amp
Input
stereo L/R RCA
stereo XLR ( 3-core, female)
3.5mm AUX / Stereo RCA
standard stereo L/R RCA
3.5mm AUX / Stereo RCA / 5-DIN
Bluetooth + RCA + PC-USB
Bluetooth/USB/Coaxial/Optical
Output
6.35mm headphone jack
XLR ( 4-core, female) / 4.4mm
3.5mm / 6.35mm headphone jack
standard stereo L/R RCA
Stereo RCA / 5-DIN
RCA + 3.5mm headphone jack
RCA / 3.5mm headphone jack
Matched headphone impedance
18-600Ω
18-600Ω
18-600Ω
—
—
32-300Ω
16-300Ω
Frequency response
20-30KHz
20-30KHz
20Hz-30KHz
20Hz-30KHz
20Hz-20KHz ( ± 0.5dB)
20Hz-20kHz(±3dB)
20Hz-20KHz (±0.5dB)
Signal to noise ratio
≥110DB
≥110DB
≥110DB
≥90DB
>80dB
103dB
≥ 113dB
Output power
≥1300mW (32Ω)
≥1400mW (32Ω)
≥1100mW (32Ω)
about 6 times (15.6dB)
20dB (Adjustable)
160mW 32Ω load
110mW @32Ω
Douk Audio U3
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Adopting innovative circuit design, DC 5-20V wide input working voltage, the amplifier circuit can always work at a high voltage of 26V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.
Adopting original TI-NE5532 classical op amp and transistor expanding current circuit, using 1300mA large current output transistor working in class A status, with ultra-low distortion, and the sound is warm and delicate, full and mellow.
Pluggable op amp socket design, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. Smooth and mellow sound, suitable for listening to vocals or string music, classic or pop music, and even with unique charm when playing rock.
Mini size with exquisite appearance and most cost-effective, brings big surprise for all audiophiles, easily to drive most headphones in the market, providing larger power, better sound field and details, very suitable for home/office desltop audio system use.
With strong drive power, easily to drive most high-impedance headphones such as: HD580/HD600/HD650/K701/K702/Q701/DT880/T70/T90/SR225/SR325/RS1e
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