Whirlwind IMP 2 Direct Box

The IMP 2 from Whirlwind is a rugged built, single-channel, passive direct box. The unit converts a line- or instrument-level unbalanced signal to a low-impedance microphone-level balanced signal.

Direct boxes are often referred to as "DI" boxes. This stands for "Direct Injection" as their main purpose is to convert unbalanced and/or high-impedance instrument signals into a format suitable for direct connection to a mixing console without the use of a microphone.