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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.

1/4″ parallel wired in/out jacks Ground Lift switches to help eliminate hum and buzz


ModelIMP 2®


TypePassive Direct Box


Input Connectors1/4″ parallel-wired in/out jacks
Output ConnectorsBalanced Low-Z XLR

Physical Information

User ControlsGround Lift switch to help isolate hum and buzz
Dimensions (WHD)0.625 x 0.375 . 0.375 inches
Weight< 1 lb

Special Features

FeaturesUses Whirlwind’s TRHL transformer

Performance Data

Frequency Response20Hz-20kHz ±1dB
Level Change (IN/OUT)-20dB