Key features

• •Mini vacuum tube preamp; Convenient to improve your sound quality; Treble & bass adjustment; Sound is warm and broad; No background noise
• •Audio signal input can be computer, CD, phone and lossless player; Audio output can be connected to digital amplifiers and active multimedia audio devices
• •Three kinds of audio input: RCA; 3.5mm stereo input; Bluetooth; Easily switching between different sound sources with its audio input selection
• •Gold-plated for input and output terminals; 6J1 valve tube; Mini size suitable for desktop
• •Adding isolation to its power supply part, which can reduce the audio interference to the lowest level
• •Please note that this product is a preamplifier. It is not an amplifier and needs to be connected with an amplifier or active audio devices. Also, it is not a phono preamp and can't work with a turntable. For noise issue: There is a large probability that the low-quality audio cable causes the static noise.
• •Please make sure the sound source is fine since tube amplifiers will amplify all sound including the noise.
• •Please check whether the tubes are plugged well on the tube sockets or not.
• •Devices like routers, mobile phones will also interfere in the audio signal and may cause static noise.
• •If your problem can't be solved, please feel free to contact us. We will be very glad to help you and try our best to make you satisfied.
• •RCA output: 0.9vrms
• •SNR: 98dB
• •Distortion: 0.3%
• •Treble adjustment range: ± 6dB
• •Bass adjustment range: ± 10dB
• •Frequency response: 20Hz ~ 20KHz
• •Power supply: 12V 1A
• •Dimensions: 97.79*117.83*33.31 mm
• •Weight: 0.32Kg
• •1 * preamp
• •2 * 6J1 tube
• •1 * 12V 1.5A power supply