6J1 Valve Tube Preamplifier Board Module Bass on Musical Fidelity DIY Kit with Case

Specifications Name 6J1 Valve Tube Preamplifier Board DIY KitsModel 6j1 tube can replace the model 6AK5 6AU6 5654 etc Channel type 2 0 StereoWorking voltage AC12V 0 8A or abovePower connector 5 5 x 2 5 plugBoard Dimensions Width 77mm x Depth 75mm x Height 57mmFeatures 1 AC 12V input DC5 5 2 1 socket with AC 12V transformer if you want to use plug free AC 12V transformer you need to wire the power cord soldered on the circuit board Remember can not use DC power input otherwise it does not work 2 Channel input for the audio signal input you can connect the phone computer M3 MP4 and other music players 3 Channel output for the audio signal output can be connected to the amplifier power amplifier board audio signal input 4 Power switch Volume knob Turn the knob counterclockwise to begin lowering the volume When the volume is turned to the minimum if you continue to rotate until the tick is heard the power is off and the indicator is off In the closed state Clockwise rotation hear the tick the indicator light that power has been turned on then the volume is minimal and then continue to clockwise rotation is to increase the volume How to use 6J1 tube buffer 0 85 times magnification enlarge connect the sound source and the former level or after the class can effectively filter digital flavor the human voice is relatively good Notice This is DIY Kits with case you need assemble it by yourself Package included 1 x 6J1 Valve Tube Preamplifi