6N3 (5670/6H3) tube preamplifier assembled board buffer

Description

parameter: Upgrade digital amplifier, powered speakers weapon Tubes:6N3*2 (can be replaced by 5670/6H3 etc) Size: 170 × 60 mm Power supply:AC 12V 500mA(Do not have to worry about looking for high-voltage power) This board comes with a boost just plug in the transformer can work Package: 1pc 6N3*2 (5670/6H3) tube preamplifier assembled board buffer