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Whirlwind

Whirlwind MLTDIR 4-Channel Rackmount Direct Box

★★★★★4.4 (3 reviews)

Route Your Signals with Precision Using a Professional Direct Box The Whirlwind MultiDirector is a rackmountable, four-channel direct box designed to convert unbalanced signals to low-impedance balanced outputs. Featuring 1/4" parallel wired in/out jacks, a ground lift switch, and a 30dB pad, th...

$412.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Route Your Signals with Precision Using a Professional Direct Box

The Whirlwind MultiDirector is a rackmountable, four-channel direct box designed to convert unbalanced signals to low-impedance balanced outputs. Featuring 1/4" parallel wired in/out jacks, a ground lift switch, and a 30dB pad, the MultiDirector is well-equipped for diverse audio applications. A switchable high-cut filter helps reduce unwanted amplifier noise, while Whirlwind's TRHL-M transformers ensure top-quality, reliable performance.

  • Channels: 4
  • Inputs/Outputs: 1/4" parallel wired
  • Ground Lift: Yes
  • Pad: 30dB
  • High-Cut Filter: Switchable
  • Transformer: Whirlwind TRHL-M with metal shield

Key Features

4-channel Rackmountable Direct Box with 30dB Pad

Ground Lift Switch

High-cut Filter

Specifications

Channels
4
Form Factor
Rackmount
Pad
30dB (per channel)
Ground Lift
Switch (per channel)
Filter
High-cut (per channel)

Pros & Cons

👍 Pros

  • Offers four independent channels in a rackmountable format, ideal for multi-instrument setups.
  • Features a 30dB pad on each channel, allowing for attenuation of high-level input signals without distortion.
  • Equipped with a ground lift switch, effectively eliminating hum and buzz caused by ground loops.
  • Includes a high-cut filter on each channel, useful for reducing unwanted high-frequency noise or harshness.
  • Rackmountable design provides a clean and organized solution for studio or live sound rigs.

👎 Cons

  • The specific impedance values for inputs and outputs are not provided, which might be a consideration for certain audio devices.
  • Being a direct box, it primarily converts impedance and balances signals, lacking any pre-amplification features.
  • The description does not specify if the unit requires phantom power or operates with an internal battery.
  • The high-cut filter is a fixed feature without adjustable frequency, limiting its versatility.

Frequently Asked Questions

The Whirlwind MLTDIR is a 4-channel rackmount direct box, allowing you to process four separate audio signals.
The 30dB pad is included to attenuate high-level input signals, preventing clipping or distortion when connecting sources with strong outputs, such as instrument amplifiers.
Yes, each channel on the Whirlwind MLTDIR features a ground lift switch, which is designed to effectively eliminate hum and buzz caused by ground loops.
The high-cut filter on each channel helps to reduce unwanted high-frequency noise or harshness from the audio signal, contributing to a cleaner sound.
The MLTDIR is a rackmountable direct box, making it well-suited for permanent installation in a studio rack or a live sound touring rig for organized and secure setups.

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