AOSHIKE Fever 6J1 Tube Amplifier Preamp Board HiFi Dual Channel Class A Volume Control Tone Preamplifier Board with Crystal Case

Product description: This preamp tube amplifier uses A1013, C2383 triode power amplification, with the electronic tube 6J1 can achieve sound detailed, warm, mellow, strong bass full strength, rich midrange, soft and soft treble. This product uses AC 12V power supply , the output audio signal can be directly used for various post-level digital power amplifier board. Product parameter: Type: tube amp amplifier Channel: Dual Channel Size: 81*81*43MM Impedance: 4-8 ohm Power supply: AC12V Net weight: 170g The PCB board change to green color, but the function is same. Operation instruction: 1, AC12V input: use DC5. 5 * 2. 1 socket, connect AC12V transformer input, remember: can not DC power input, otherwise it does not work. 2, left and right channel input: for audio signal input, you can connect to mobile phone, MP3, mp4 and other music players. 3, left and right channel output: for the audio signal output terminal, can be connected to the amplifier, the audio signal input end of the power amplifier board, to provide a bizarre music enjoyment for the later stage power amplifier! 4. Power switch/volume knob: In the closed state, rotate the rotation clockwise to hear a "tick" sound, the indicator light is on, indicating that the power has been turned on, then the volume is the smallest, then continue to rotate clockwise is to increase volume. Turn the knob counterclockwise. At the beginning, the volume is lowered. When the volume is turned off to the minimum, if you continue to rotate until "tick", the power is turned off and the power indicator is off. Note: 1. The power supply uses AC 12V (loop cow, AC transformer), switching power supply, adapter and other DC power supply can not be used. 2. The product is a preamplifier. It is not audio amplifier. It needs to be connected to an active speaker and a rear amplifier. Package included: 1PC