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Mackie MDB-2P Stereo Passive Direct Box

BH #MAMDB2P • MFR #MDB-2P
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Mackie MDB-2P Stereo Passive Direct Box
Key Features
  • Route a Stereo Instrument to Mic Inputs
  • Converts Unbalanced to Balanced
  • Converts High Impedance to Low Impedance
  • Two 1/4" Unbalanced Inputs
The Mackie MDB-2P is a stereo passive direct box designed to connect two mono instruments or a single stereo instrument to microphone preamps for musicians and audio engineers in recording sessions, houses of worship, and live stage applications. It converts high-impedance, instrument-level signal via its 1/4" TS unbalanced inputs to low-impedance, mic-level outputs via balanced XLR 3-pin jacks. Two 1/4" TS thru jacks allow simultaneous connection to amplifiers or pedalboards.

Each channel offers a -15 dB pad for reducing the input level to prevent distortion when using a high-gain source. The ground-lift switch inhibits hum caused by ground loops. Due to passive design principles, the MDB-2P requires no batteries or power supply. Its sturdy steel chassis enables confident use in the studio or on the road.

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Mackie MDB-2P Overview

The Mackie MDB-2P is a stereo passive direct box designed to connect two mono instruments or a single stereo instrument to microphone preamps for musicians and audio engineers in recording sessions, houses of worship, and live stage applications. It converts high-impedance, instrument-level signal via its 1/4" TS unbalanced inputs to low-impedance, mic-level outputs via balanced XLR 3-pin jacks. Two 1/4" TS thru jacks allow simultaneous connection to amplifiers or pedalboards.

Each channel offers a -15 dB pad for reducing the input level to prevent distortion when using a high-gain source. The ground-lift switch inhibits hum caused by ground loops. Due to passive design principles, the MDB-2P requires no batteries or power supply. Its sturdy steel chassis enables confident use in the studio or on the road.

Connect two mono instruments such as guitars or basses or a stereo instrument such as a keyboard to microphone preamps
Converts high-impedance, unbalanced 1/4" TS inputs to low-impedance, balanced XLR mic-level outputs
1/4" thru jacks for routing to amplifiers or pedalboards
Per-channel -15 dB pad prevents overloading when accepting signal from a loud source
Ground-lift switch minimizes hum
Passive design requires no batteries or power supply
UPC: 663961053999

Mackie MDB-2P Specs

General
Item Type
Standard DI
Number of Channels
2-Channel
Active/Passive
Passive
Circuitry
Solid-State
Preamp
Pad
-15 dB
Ground Lift
Yes
Polarity Reverse
No
EQ & Tone Shaping
Low-Cut/High-Pass Filter
No
Connectivity
Audio I/O
2x 1/4" TS Unbalanced Input
2x 1/4" TS Unbalanced Thru
2x XLR 3-Pin Balanced Output
Performance
Frequency Response
20 Hz to 20 kHz ±0.2 dB
Input Impedance
140 Kilohms (Unbalanced)
Output Impedance
400 Ohms (Unbalanced 1/4")
Total Harmonic Distortion/Noise
0.002% (from 1 kHz)
Power
Operating Voltage
No Power Required
Physical
Dimensions
5.8 x 3.4 x 1.5" / 147 x 86 x 38 mm
Weight
0.9 lb / 0.4 kg
Packaging Info
Package Weight
1.12 lb
Box Dimensions (LxWxH)
7 x 5.75 x 2.9"

Mackie MDB-2P Reviews

Does exactly what I needed it to do

By Albert
Rated 5 out of 5
Date: 2020-12-01

I had a ground loop between my laptop, mixer and keyboard amp. This removed the ground loop. The -15db pad also gave me better control over the signal coming from the laptop into the mixer. Perfect solution to combine consumer grade audio with live audio, especially if you want to keep stereo features.

So far so good

By Reidinger
Rated 5 out of 5
Date: 2018-09-14

Using it to connect a keyboard into a mixing console. It's doing what it's supposed to so far.

See any errors on this page?

If I have a "stereo" line level source will this ...

If I have a "stereo" line level source will this give me 2 mono XLR outs, or do I have to use both L/R outs ?
Asked by: mark
If you have a stereo line level source with left and right outputs, you are sending two different mono signals to the inputs on the Mackie MDB-2P Stereo Passive Direct Box, so you will need to use both the left and right XLR outputs in order to maintain the stereo image.
Answered by: Lisa S
Date published: 2023-07-07
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