The Jantzen Audio Air Core Wire Coil is made of a very pure copper wire, offering distortion-free inductance. It will therefore be suitable for all audio applications. The coil benefits from a modern, self-supporting design with a low inductance tolerance (+/-1%). The power handling depends on the wire used and more particularly on the thickness of the copper wire. The greater the thickness, the higher the power capacity will be. Jantzen Audio Air Core Wire Coils are among the most versatile coils on the market.