A high intensity discharge driver for a HID lamp which can be used as a HID ballast is provided. The headphone earbud device is configured with an adaptive connection for controlling the audio signals andor device providing the audio signals. Such compounds encompass alicyclic diepoxides having purities of at least 95 percent or at least 98 percent with respect non-isomeric residues and are essentially free of any isomeric alicyclic diepoxide residues. Optionally, one or more optical fibers are provided to facilitate curing of the adhesive.