Used Whirlwind IMP DESIGN ONE Direct Box

Used Whirlwind IMP Design One Direct Box

Estimated Year: 1980s–1990s

Made in: USA

Overview

The Whirlwind IMP (Impedance Matching Product) Design One is a rugged passive direct box designed to convert high-impedance instrument signals to low-impedance balanced signals for mixing consoles and recording equipment. Built in the USA and housed in a durable metal enclosure, the IMP has been a staple of live sound companies, studios, churches, and touring rigs for decades.

This unit is ideal for connecting guitars, basses, keyboards, drum machines, and other instruments directly to a PA system or recording interface while maintaining signal integrity and reducing noise over long cable runs. The transformer-based design requires no power and is known for reliable, roadworthy performance.

Features

- Whirlwind IMP Design One Direct Box

- Passive transformer-based design

- High-impedance to low-impedance conversion

- 1/4" instrument input

- Balanced XLR output

- No power or batteries required

- Durable steel enclosure

- Made in USA

- Ideal for guitar, bass, keyboards, and acoustic instruments

- Suitable for live sound and studio applications

Condition

Good condition.

- Tested and functioning properly

- XLR output connector is intact and secure

- 1/4" input jack is in good working order

- Exterior housing shows moderate cosmetic wear from normal use

- Label exhibits scratches, scuffs, and discoloration

- Cable remains securely attached

- Typical wear consistent with an older professional audio tool

Store Policies

- All items are tested before listing and again before shipping.

- Orders typically ship next business day.

- Shipping is available to the continental U.S. only.

- We do not accept trades on shipped items.

- Returns are accepted within 48 hours of delivery. The buyer covers return shipping, and a 20% restocking fee applies. If you have any questions before buying, feel free to message us—we’re happy to help.