 Aikido Line Stage Amplifier Kit (9-Pin & stereo). Part kits include tubes, resistors, PS and heater bypass capacitors, coupling capacitors, printed circuit board, ceramic tube sockets, and board stand off assemblies. |  Introducing the new Aikido 12Vac PCB and part kits. The key advantage of the Aikido 12Vac is that it can be operated from a lowly wallwart power supply, yet develop a fairly high-voltage B+ for the triodes. |