Douk Audio U3 Mini Pure Class A Headphone Amplifier HiFi Ultra-compact Home Desktop Stereo Amp for HD580/HD600/HD650 Headsets

Warm tips:Not inlcude power adapter, recommend to use original high-quality power adapter above 5W. For example: the current should be above 1A if use DC 5V while need above 0.5A if use DC 12V power adapter.

Features

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 stong drive power, easily to drive most high-impedance headphones such as:

HD580/HD600/HD650
K701/K702/Q701
DT880/T70/T90
SR225/SR325/RS1e

Parameters:

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: 310g / 0.68lb

Packing List

1*U3 Headphone Amplifier
1*USB to DC Cable
1*6.35mm to 3.5mm Headphone Adapter

About Your Shipment:Preparation Time: The delivery will take approximately 1 week after payment is made, and will be shipped via air express. Please ensure your address is correct when placing your order. If you need to make changes before shipment, please inform us of the updated address.Contact Us: We strive to provide excellent service. If you have any questions, please feel free to reach out to us. We will respond promptly and do our best to resolve any issues.About Guarantee: Failed to receive after 60 days of purchase date or not satisfied. We will either issue you a refund or resend a new item. Guaranteed!Why Buy From Us? 7 days Money Back Guarantee after receiving your order. 12 Month Manufacturer Warranty!Please note:If the address is a remote address it will be a little more charge postage than shipping options rate.