Mackie MDB-2P Stereo Passive Direct Box (MDB2P / MDB 2P)


Stereo Passive Direct Box

Product Highlights

  • Route a Stereo Instrument to Mic Inputs
  • Converts Unbalanced to Balanced
  • Converts High Impedance to Low Impedance
  • Two 1/4″ Unbalanced Inputs
  • Two 1/4″ TS Thru Jacks
  • Two XLR 3-Pin Balanced Outputs
  • -15 dB Pads Prevent Overloading
  • Ground-Lift Switch Minimizes Hum
  • No Power Source Required
  • Heavy-Gauge Steel Construction


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
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