This is a tube headphone amp & preamp & USB DAC, with digital input (Bluetooth 4.2 / USB / Coaxial) and anolog stereo RCA input, can satisfy different audio device demands. With vertical aluminum alloy chassis design, the headohone amp part uses 4PCS tube as SRPP output, the tone is beautiful and well balanced in three frequencies, sounds smooth and delicate, warm and sweet. As headphone amp, it can connect to computers, CD players, digital players, etc. To enjoy HiFi clear sound, two 6.35mm headphone outputs are designed with different sounds which is suitable for 32O-600O headphones Blueooth; As preamp, it can be connected to the power amplifier or active speakers. High-end materials are used, such as imported capacitor, Japan ALPS potentiometer, specially customized audio transformer, the circuit board adopts 3-layer.
Modular three-dimensional structure, convenient for future maintenance or upgrade. Warm tips: the sound will be much better after warming up about 20 minutes. 6S6-T tube can be directly replaced by Soviet Union 66.Tubes: 6S6T ×4 can be replaced by 66. Circuit Structure: SRPP Class A Amplification.
Frequency response: 20Hz-20KHz -0.1dB 5Hz-200KHz -3dB. Headphone impedance: 32O - 600O.
1 set of RCA line input. 1 set USB input 24bit 192K.
1 set of coaxial input 24bit 192K. Bluetooth 4.2 supporting APT-X and APTX-LL. 1 set of RCA line output.
2 groups of 6.35 mm headphone output. Working voltage: 100-120V / 220V-240V 50/60Hz (110V needs more 3-5 bz days to prepare). Please leave VALID TELEPHONE NUMBER which is necessary and very important.For package less than 2KG, we use. (10-25 days to most countries).
And for package over than 2KG we use. (5-8 days to most countries). Free Return Within 30 Days. We provide return within 30 days. Is provided for all items.
Audio accessories and consumables such as vacuum tubes. If you are satisfied with our products and service please leave a 5-star.
Feedback, we will provide better solutions until you are satisfied. Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including. Douk Audio / Nobsound / Little Bear. 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.Improve our customers' listening experience. 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. The item "Stereo Vacuum Tube Headphone Amplifier USB DAC Bluetooth Receiver Audio Preamp" is in sale since Wednesday, February 26, 2020.This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "doukstore" and is located in shenzhen. This item can be shipped worldwide.