The Whirlwind IMP 2 is an industry-standard, single-channel passive direct injection (DI) box that converts a high-impedance, unbalanced line or instrument signal into a low-impedance, balanced microphone signal. Manufactured in the USA, it is trusted worldwide by touring professionals, live sound venues, and recording studios for its extreme durability and clean audio performance.

Key Features & Specifications

• Passive Operation: Requires no batteries or phantom power to operate. 
• Whirlwind TRHL Transformer: Custom-designed transformer that is riveted (not glued) to the steel chassis for maximum ruggedness. 
• 1/4" Parallel Wired In/Out Jacks: Allows you to pass your unaffected instrument signal through to an on-stage amplifier while simultaneously sending a balanced signal to the mixing console. 
• Ground Lift Switch: Safely breaks the ground connection between the input and XLR output to isolate and eliminate ground-loop hum and buzz. 
• Impedance Ratio: 133:1 input-to-output ratio (20k Ohms input impedance / 150 Ohms output impedance). 
• Frequency Response: 20Hz to 20kHz (±1dB) for clean, uncolored signal transfer. 

Performance & Common ApplicationsIndependent user experiences frequently highlight that the IMP 2 is "built like a tank" and easily survives decades of heavy road abuse. According to user feedback compiled by Sweetwater and Equipboard, it excels at delivering a crystal-clear signal with zero added noise. 

• Keyboards & Synthesizers: Bridges high-output electronic line levels down to mic level safely.
• Acoustic-Electric Guitars: Ideal for matching the impedance of acoustic piezo or active pickup systems.
• Bass Guitars: Captures clean, direct bass low-end straight into a PA system or recording interface.