Check the listing for details. Single channel amplifier module for Scalar Wave coils. Condition: New. Listed at 49.90 USD. The amplifier serves as an intermediary between the frequency source and the bifilar Tesla coil. In a simple term, it amplifies the signal coming in via the audio cable and transmits it into the standalone bifilar coil module. This increases the potency and strength of the generated scalar wave field. It can be connected to various different coils like bifilar Tesla Coil, unifilar Tesla coil, rectangular bifilar Tesla Coil, octagonal Tesla coil, and Triangular Tesla coil. In all cases, the black banana connector on the amplifier must be connected with the black banana connector on the coil module and vice versa with the red connectors. Just like all other amplifier boards that we make, this one is also powered by 3 standard AA batteries. You can use either alkaline 1.5V cells or the 1.2V rechargeable ones.