Behringer DI20 Ultra-DI Professional Active 2-Channel DI-Box

The Behringer Ultra-DI DI20 is a professional active 2-channel direct injection box designed to convert unbalanced 1/4" TRS signals into balanced XLR outputs for clean, noise-free connections to mixing consoles, audio interfaces, and recording equipment. With two independent channels, it handles stereo sources like keyboards and media players in a single box, while the switchable Link mode allows flexible configuration for mono, dual-mono, or stereo operation. The switchable input attenuation is a standout feature, enabling the DI20 to accept signals ranging from instrument-level all the way up to speaker-level outputs of 3,000 watts, making it useful for reamping scenarios or tapping a signal directly from a power amplifier.

Signal quality is solid for its price class, with a frequency response spanning 10Hz to 70kHz, total harmonic distortion below 0.014% at 1kHz, and a noise floor of -100dBu. The built-in ground lift switch addresses one of the most common live sound headaches — ground loop hum — with a single toggle. Power flexibility is another practical advantage: the DI20 runs on standard 48V phantom power from the connected mixer or falls back to an internal 9V battery when phantom power is not available. With an input impedance above 250 kOhms, it presents a suitable load for most active instruments and line-level sources, though players using high-impedance passive pickups may notice a subtle tonal difference compared to dedicated high-impedance DI units.