With 5 kinds of analog and digital audio input (Bluetooth 5.0 / USB / Coaxial / Optical / 2 groups of RCA), compatible with almost all audio devices such as MP3, phone, tablet, computer, CD players etc. to meet different needs of home audio systems. U-disk input supports lossless formats such as APE, FLAC, WAV etc., easy to enjoy HiFi music.

　　Besides speaker output (4/6/8Ω), a low frequency output is specially designed to connect active subwoofer to build 2.1 channel audio systems, which can strengthen bass sound effects to bring more shocking experience just like in the cinema. With treble and bass control to bring more delicate sound according to your own listening style.

　　Integrated design of vacuum tubes and transistors, using 6U1/6A2/WY-3P tube for pre-amplificatoin, WY3P tube for recti

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　　Douk Audio Hybrid Stereo Tube Integrated Amplifier with Bluetooth USB COAX OPT

　　Item description

　　Shipping from USA Warehouse, you will receive it within 1-6 bz days.  

　　Warm tips:

　　Only in the condition of large dynamic music and much bass effect the VU meter will work.

　　Features

　　With 5 kinds of analog and digital audio input (Bluetooth 5.0 / USB / Coaxial / Optical / 2 groups of RCA), compatible with almost all audio devices such as MP3, phone, tablet, computer, CD players etc. to meet different needs of home audio systems. U-disk input supports lossless formats such as APE, FLAC, WAV etc., easy to enjoy HiFi music.

　　Besides speaker output (4/6/8Ω), a low frequency output is specially designed to connect active subwoofer to build 2.1 channel audio systems, which can strengthen bass sound effects to bring more shocking experience just like in the cinema. With treble and bass control to bring more delicate sound according to your own listening style.

　　Integrated design of vacuum tubes and transistors, using 6U1/6A2/6H2

　　tube for pre-amplificatoin, WY3P tube for rectification, the sound is clear, warm, smooth and delicate. And using 4PCS Toshiba 5200 and 4PCS 1943 transistors for power amplification, dual toroidal transformers is added that can stably output max 200W in each channel, easily to drive all home passive speakers.

　　Unique design and attractive appearance, exquisite black panel and retro vacuum tube are combined that looks luxurious and elegant. With dual VU meter to dynamically to decorate the listening enjoyment, and display screen can show the working status in real time, very suitable for home and desktop audio system use.

　　Parameters

　　Audio input: Bluetooth / 2 groups of RCA / USB(U-disk) / Coaxial / Optical

　　Audio output: speaker jack / low frequency output (connect active subwoofer)

　　U-disk supported sampling rate: 16Bit/48KHz

　　U-disk supported formats: MP3/WAV/APE/FLAC

　　U-disk max storage capacity: 64G

　　Bluetooth version: 5.0

　　Rated output power: 200W+200W

　　Frequency response: 20HZ-20KHZ(±2dB)

　　Input impedance: 47KΩ

　　Output impedance: 4Ω/6Ω/8Ω

　　Treble and Bass range: ±10dB

　　Signal to noise ratio: ≥80DB

　　THD: ≤0.5%(1KHz)

　　Dimensions(W*D*H): 330*315*160mm / 12.99*12.44*6.30in

　　Package dimensions(W*D*H): 380*350*210mm/ 14.96*13.78*8.30in

　　Net weight: 7.16kg / 15.79lb

　　Package weight: 9.0kg / 19.84lb

　　Packing List

　　1*Tube Amplifier

　　1*Power Cord

　　Payment

　　Fast Shipping

　　Return Policy

　　About us

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　　Payment

　　Safe and secure payment by PayPal.

　　Fast Shipping

　　The items are located in US, and will be shipped within 1 working day, 2-6 working days to deliver.

　　Return Policy

　　Free Return Within 30 Days

　　We provide free return with 30 days for all items you bought on eBay, full refund and return shipping will be provided.

　　1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).

　　If you are satisfied with our products and service please leave a 5-star .

　　Feedback is very important to us just like our lives, please DO contact us before you leave a neutral

　　or negative

　　feedback, we will provide better solutions until you are satisfied.

　　About us

　　Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc.  As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.  We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience.

　　Contact us

　　Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:   Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM  During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation.

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