Features: (1)Please Note:This is an electronic tube preamplifier board, without amplifier function (2)can not be connected to the headphone amplifier and speakers, can not be connected to the car's power supply DC12V (DC12/1A), can not be installed in the car. (3)Power supply: DC12 1A(without power adapter) (4)Tube: 6k4 (can be used 6J1 6J2 6J4 6J5 6A2 6K4 6K5 6AK5 6AU6 6BA6 6BD6 EF93 6K7 GE5654 and other tube replacement)
Package included: 1*pc preamplifier board 2*pcs 6a2 tube