LINEPAUDIO A962 HiFi 6J9 Vacuum Tube Headphone Amplifier USB ASIO Sound Card, A962

Product information
1. LINEPAUDIO A962 HiFi power headphone amplifier with the most elaborate level vacuum tube, made of Beijing classic quality 6J9-J vacuum tube, USB-PC supported ASIO sound effect software will give a more professional, full, open-stage, soft and smooth sound, especially applicable to vocals, string music, pop music and classical music, the performance of different frequency points is so perfect! High frequency fine, low frequency strong! Easily drive 16?? - 600?? headphones of any class, quiet background without any current background noise! ​​Two sets of audio signal input, one is USB signal input (USB-PC), USB cable is connected to PC, plug and play without drive, directly used as a high-level USB external sound card. The USB port can also be connected to any model of Android mobile phone with OTG function. The other is 3.5mm interface audio signal input, and you can connect it to mobile phones, CDs, lossless music players or other audio source devices. In the case of simultaneous input of USB signal and 3.5mm interface signal, 3.5mm interface signal input is preferable.
2. LINEPAUDIO A962 has three sets of audio signals, output simultaneously to meet the interface of different devices (RCA / 3.5mm / 6.35mm), the output end will give you a real HiFi experience, connected to your high-end headphone or speaker, or used as a timbre-adjustable pre-amplifier to connect your digital power amplifier, multimedia speaker or various stereo devices, what a real pre-amplifier. Of course, if you want to experience the timbre style of different tube amplifiers, this product can fully meet your needs, compatible with E180F, 6688 and other tube models, you can exchange it at will.
3. Many music lovers are worried about the background noise of tube headphone amplifier, but this product frees you from this worry, its performance in controlling the background noise is extraordinary, the background is silent after several tests and optimization of the circuit design, without any current background noise, you will feel the most pure, natural and nostalgic sound. Regarding the current background noise test: As everyone knows, the current background noise comes from two sources, one is the tube headphone amplifier, the other is the audio source or audio cable (audio cable is more likely to generate background noise), the correct procedure to test the headphone amplifier is to unplug the audio input cable, with the power on, if the background of the headphone amplifier is low, it indicates that the headphone amplifier has a very high SNR. If restless, or it seriously affects your listening to music, it indicates that the headphone amplifier has a very low SNR.
4. Note: Even an electronic interference device near the desktop can affect the SNR. For example, if the vacuum tube power amplifier is placed near a router or wireless device, it may suffer from some interference. Enclosed by aluminum shell, miniaturized but exquisite, the front and back panel are precisely machined by CNC machining center, you will get a great handle, ultra-small volume will not occupy too much space on your desktop. More than a high-end high-fidelity multi-functional USB sound card tube headphone amplifier, it is also a beautiful desktop ornament. All the letters on the machine panels are printed using expensive laser carving and will never fade.

Characteristics
1. 2 sets of signal inputs (USB-PC and 3.5mm input), 3.5mm input is preferable.
2. 3 sets of stereo signal outputs: 3.5mm / 6.35mm / RCA simultaneous signal outputs, allowing you to connect different device interfaces.
3. USB: PC supported ASIO sound effects software (ASIO drive to be installed)
4. Input power: >=1100mW (32 ohm).
5. Matched headphone impedance: 16 ohm-600 ohm.
6. Frequency response: 20 kHz - 30 kHz.
7. Supported sampling rate: 16bit - 32kbit, 44.1kHz, 48kHz.