note:
You need to solder this set of tools yourself.
(As shown in the picture, there is no tube)
This kit is a kit of transistor resistor PCB parts! Power supply voltage requirements. The high voltage range of 230 to 280 may be greater than the current of 50ma. The filament voltage is 6.3v / 2.5A. Tube; 12AU7 / 1 unit 12AX7 / 2 unit, 6dj8 / 1 A