The Behringer Ultra-DI DI100 is a compact and reliable single-channel active direct box designed to solve common audio interface problems in live sound and studio recording. Its primary function is to convert unbalanced, high-impedance signals from instruments like electric guitars, basses, or keyboards into balanced, low-impedance microphone-level signals. This transformation allows these signals to be transmitted over long cable runs to a mixing console without introducing hum, noise, or high-frequency loss that typically plagues unbalanced connections.

Featuring a robust all-metal casing, the DI100 includes a ground lift switch to eliminate potential ground loop hum, a critical tool for achieving a clean audio feed in any venue. Its active circuitry is powered by a standard 9V battery or optional phantom power from the mixing console, providing a strong, clear signal with high headroom. The unit offers both a balanced XLR output to send the signal to the mixer and a parallel unbalanced quarter-inch Thru output to connect directly to an amplifier on stage, allowing the musician to retain their stage sound while sending a clean feed to the front-of-house.

The DI100 is an essential, cost-effective tool for musicians, sound engineers, and churches, ensuring professional audio quality from instrument sources. Its simple, effective design makes it a staple in audio toolkits, reliably bridging the gap between stage instruments and the professional audio system for clear, noise-free performance.