Product Features
  • Route a Stereo USB Source to Mic Inputs
  • Converts USB to Balanced Analogue
  • USB 2.0 Type-B Input
  • Two XLR 3-Pin Balanced Outputs
  • 3.5mm Stereo Headphone Output
Our Price $309.00

Need more information about this product? - We'll get back to you ASAP
You must enter a valid email address.
Email me when stock arrives
North Island
South Island

The Mackie MDB-USB is a USB-powered stereo DAC direct box designed to connect stereo a signal from USB to microphone preamps for DJs, producers, musicians, and audio engineers in recording sessions, clubs, houses of worship, and live stage applications. It converts a stereo digital audio feed at up to 24-bit/96 kHz resolution via a USB 2.0 Type-B input to low-impedance, mic-level analogue outputs via two balanced XLR 3-pin jacks. A 3.5mm headphone output is provided for easy monitoring.

Optimise your gain stage using the level knob, which adjusts the output volume at the XLR and 3.5mm jacks. The mono on/off switch enables operation of the MDB-USB in stereo or mono. Its ground-lift switch inhibits hum caused by ground loops. A sturdy steel chassis enables confident use in the studio or on the road.

Key Features

  • Connect the USB output from a stereo mixer, audio interface, or computer to microphone preamps
  • Converts stereo digital signal from a USB connection to low-impedance, balanced XLR mic-level analogue outputs
  • USB 2.0 Type-B female input
  • Two XLR 3-pin balanced outputs
  • 3.5mm stereo headphone output
  • Supports up to 24-bit/96 kHz resolution
  • Mono switch allows easy sum-to-mono functionality
  • Ground-lift switch minimises hum
  • Level knob controls overall volume to the XLR and 3.5mm output jacks
  • Powered via USB connection
Input Connections1 x USB 2.0 Type-B female
Output Connectors2 x XLR 3-pin balanced
1 x 1/8" (3.5 mm) stereo mini-jack
Input Impedance330 kOhms balanced
Output ImpedanceXLR: 600 Ohms balanced
3.5 mm: 150 Ohms unbalanced
Controls1 x mono switch
1 x ground-lift switch
1 x level knob
Supported ResolutionUp to 24-bit/96 kHz
Frequency Response20 Hz to 20 kHz (±0.5 dB)
Dynamic Range88 dB
Total Harmonic Distortion0.01%
Power RequirementUSB, 90 mA
System RequirementsMac OS

Windows 7, 8, or 10
SupportsWDM, MME, Core Audio, DirectSound, and WAV
Construction MaterialHeavy-gauge steel chassis
Dimensions (H x W x D)38 x 86 x 147 mm
Weight0.5 kg
Mackie MDB-USB Stereo DAC Direct Box
RM Product #: