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Description
Douk Audio U3 PRO HiFi Mini Class A Headphone AmplifierDescriptions Enhanced Compatibility: with 3. 5mm AUX stereo RCA input and 3. 5mm 6. 35mm headphone jack output, the U3 PRO is compatible with a wide range of audio sources, including MP3 players, iPods, smartphones, tablets, computers, and CD players etc. Its output can connect to various headphones, offering a versatile listening experience with support for most headphone models. Built in Voltage Boost Circuit: adopting innovative circuit design with
Descriptions
- Enhanced Compatibility: with 3.5mm AUX/stereo RCA input and 3.5mm/6.35mm headphone jack output, the U3 PRO is compatible with a wide range of audio sources, including MP3 players, iPods, smartphones, tablets, computers, and CD players etc. Its output can connect to various headphones, offering a versatile listening experience with support for most headphone models.
- Built-in Voltage Boost Circuit: adopting innovative circuit design with built-in voltage boost circuit, the amplifier circuit can always work at a high voltage of ±14V even only powered by DC 5V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.
- Exceptional Output Power: for a total power output of up to 1500mW under a 32Ω load, U3 PRO can easily power headphones with any low or high impedance (18-600Ω). Working in class A status, with ultra-low distortion, the sound is warm and delicate, full and mellow with outstanding sound quality.
- Classic OP+BUF Architecture: U3 PRO adopts OP42 and BUF634, featuring a pure DC amplification circuit. Pluggable op amp socket design, OP42 can be replaced by OP17, AD797, AD843, AD847, and OPA627, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles.
- Highly Cost-Effective: mini size with exquisite appearance, 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 desktop audio system use.
Sepefications
- 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
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 2394 reviews
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Product Reviews
★★★★★ 5
Thought provoking - and fun too
Format: Paperback
While I'm not usually a graphic novel reader, this really grabbed me. Its seriously thought provoking, with the right mix of humor to keep it from being heavy. The illustrations amaze me - I fill in the blanks with my mind so quickly that I feel like I'm looking at the person rather than a drawing. Definitely worth reading, and hanging onto to think about again and again.
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Reviewed in the United States on April 6, 2022
★★★★★ 3
Not very impressed
Format: Kindle
I really wanted to like this book. I am very interested in gender identity issues, but after I started to read it I found myself tuning out pretty soon. Honestly, I thought it was boring. Maybe it’s the format - I’d rather talk to a real person and hear their stories!
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Reviewed in the United States on September 14, 2022
★★★★★ 5
Thought provoking and warm
Format: Paperback
I heard the author on NPR and it was such a fascinating discussion that I bought the book immediately. I live with a teen in the LGBTQ+ community, and I'm trying to learn as much as I can to support them, and others. I can't wait to let them read it now that I'm finished. The book is a wonderful representation of those across the gender spectrum, providing insight and vulnerability meant to help us all understand a little better and build up our compassion for each other.
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Reviewed in the United States on April 29, 2022
★★★★★ 5
Fabulous!
Format: Paperback
A great book at such a pivotal time in our world. Easy to read, understand, and I love art! Thank you!
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Reviewed in the United States on June 20, 2024
★★★★★ 5
I Am Not Alone
Format: Paperback
Three cheers for FINE: a comic about gender! Heartwarming, life-saving stories about living outside the boy/girl boxes. What a relief to see myself reflected in these pages and have tangible proof that I am not the only one. Thank you, Rhea Ewing!
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Reviewed in the United States on April 6, 2022