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 analog outputs via two balanced XLR 3-pin jacks. A 3.5mm headphone output is provided for easy monitoring.
Optimize 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.
Type DAC
Input Connections 1 x USB 2.0 Type-B female
Output Connectors 2 x XLR 3-pin balanced
1 x 1/8" (3.5 mm) stereo mini-jack
Input Impedance 330 kOhms balanced
Output Impedance XLR: 600 Ohms balanced
3.5 mm: 150 Ohms unbalanced
Controls 1 x mono switch
1 x ground-lift switch
1 x level knob
Supported Resolution Up to 24-bit/96 kHz
Frequency Response 20 Hz to 20 kHz (±0.5 dB)
Dynamic Range 88 dB
Total Harmonic Distortion 0.01%
Power Requirement USB, 90 mA
System Requirements Mac OS
Windows 7, 8, or 10
Supports WDM, MME, Core Audio, DirectSound, and WAV
Construction Material Heavy-gauge steel chassis
Dimensions (H x W x D) 1.5 x 3.4 x 5.8" / 38 x 86 x 147 mm
Weight 1 lb / 0.5 kg
Packaging Info
Package Weight 1.5 lb
Box Dimensions (LxWxH) 7.0 x 5.8 x 3.0"