AC 12V 1A 6J1 Preamp Tube Amplifier Board PreAmplifier Module Pre-Amp Headphone Bile Buffer Stereo Bass HIFI X10-D

Features:
1. Type: 6j1 tube
2. input :AC 12V1A, 5.5*2.5 plug 3. Channle :2.0 / stereo 4. Potentiometer Role: Volume adjustment + Switch
5. Size: 77 x 75 x 52mm
6.For your convenience, this product has been assembled
Specification:
FE-6J1-2 fever tube pre-amp board is the circuit schematic design crew Music fax X-10D,to be rational optimization,more stable performance than the machine,tube play 10% increase. This board uses a single 12V AC input,the circuit processing provides 6J1 tube needed positive and negative voltage and filament supply voltage. works: an open tube filament heating is started,when the boost from the zero-voltage start boosting hot filament tube,etc.,also happens to boost boosting finish,so this is the same with the guts rectification,8*470UF the capacitor filter very clean,good supply system will not have a hum,the filament is 12V supply,need two filament tube is connected in series with a filament also in order to reduce the noise.

Instructions:
6J1 Tube Buffer 0.85 times , connected between the source and before or after class, can effectively filter digital flavor.
1. AC 12V input: The DC3.5 / 5.5 * 2.1 socket, 12V AC adapter, if you use non-plug AC 12V transformer, cord need to solder on the circuit board. Remember: You can not use a input, otherwise it does not work! 2. the left- input / right input: audio signal input, can be connected to mobile phones, computers, , the MP4, and music players. 3. the left output / right output: an audio signal output terminal can be connected to the audio signal input amplifier, amplifier board. 4. the switch / volume knob: turn the knob counter-clockwise to decrease the volume beginning, when the volume down to the minimum, if it continues to rotate until the "ticking" sound, then the off, the light goes off; in the closed state, Turn the knob clockwise to hear "tick" sound, light is on, the is turned on, then the volume is minimal, then continue clockwise rotation is to increase the volume.








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