915 Generation Newest 6J1 tube preamp amplifier board -amp Headphone amp

100%Brand New and High Quality
Power input: AC 12V 1A 5.5*2.5 PLUG
Channle: 2.0/ stereo
Potentiometer Role: Volume adjustment + Power Switch FE-6J1-2 tube -amp board is the circuit schematic design imitation crew Music fax X-10D,to be optimization,more stable performance than the original machine,tube play 10% increase. This board uses a single 12V AC input,the circuit processing provides 6J1 tube needed and negative voltage and filament power supply voltage.
Power works: an open power tube filament heating is started,when the boost from the zero-voltage boosting hot filament tube,etc.,also happens to boost boosting finish,so this is the same with the rectification,8*470UF the capacitor filter clean,good power supply system will not have a ,the filament is 12V DC power supply,need two filament tube is connected in series with a DC filament also in order to reduce the noise.
Color as shown
Material: plastic + metal
SIZE: 77MM * 75MM * 52MM Package Contents:
1* 6J1 tube preamp amplifier board
1* Transparent shell parts
1* Instruction 1* Screw package
Note: This is Diy Kits. you need . Only the above package content, other are not included.
Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.