MDB2P 

Stereo Passive Direct Box

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.

Features

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

Specifications

TypePassive

Input Connections2 x 1/4" TS unbalanced

Output Connectors2 x 1/4" TS unbalanced

2 x XLR 3-pin balanced

Input Impedance140 kOhms unbalanced

Output Impedance400 Ohms unbalanced

Impedance Ratio350:1

Pad-15 dB

Controls2 x pad switches

1 x ground-lift switch

Frequency Response20 Hz to 20 kHz (±0.2 dB)

Dynamic Range128 dB

Total Harmonic Distortion0.002% from 1 kHz

Power RequirementNone

Construction MaterialHeavy-gauge steel chassis

Dimensions (H x W x D)1.5 x 3.4 x 5.8" / 38 x 86 x 147 mm

Weight0.8 lb / 0.4 kg

Packaging Info

Package Weight1.12 lb

Box Dimensions (LxWxH)7 x 5.75 x 2.9"
What’s In The Box

- MDB-2P Stereo Passive Direct Box