The device in the advert is a Behringer Ultra-G GI100, a professional active direct injection (DI) box specifically designed for guitarists. features authentic 4 x 12" speaker cabinet emulation designed by Juergen Rath, allowing for a realistic guitar tone without needing a microphone. The unit is versatile, capable of being powered by a 9V battery or via phantom power from a mixing console. It can handle direct connection to speaker outputs with power ratings of up to 3,000 Watts. Built for the road, it features a rugged aluminum chassis with oversized rubber corners for protection. It includes an internal OT-1 transformer to ensure an ultra-flat frequency response and maintain signal purity.