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Mackie MDB-2P Stereo Passive Direct Box


Mackie MDB-2P Stereo Passive Direct Box


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
Type Passive
Input Connections 2 x 1/4″ TS unbalanced
Output Connectors 2 x 1/4″ TS unbalanced
2 x XLR 3-pin balanced
Input Impedance 140 kOhms unbalanced
Output Impedance 400 Ohms unbalanced
Impedance Ratio 350:1
Pad -15 dB
Controls 2 x pad switches
1 x ground-lift switch
Frequency Response 20 Hz to 20 kHz (±0.2 dB)
Dynamic Range 128 dB
Total Harmonic Distortion 0.002% from 1 kHz
Power Requirement None
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 0.8 lb / 0.4 kg
Packaging Info
Package Weight 1.12 lb
Box Dimensions (LxWxH) 7 x 5.75 x 2.9″

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