Mackie MDB-1P Passive Direct Box

Mackie MDB-1P Passive Direct Box

  • Connect an Instrument to a Mic Input
  • Converts Unbalanced to Balanced
  • Converts High Impedance to Low Impedance
  • 1/4" Unbalanced Input
  • 1/4" Thru Jack
  • XLR Balanced Output
  • Switchable Pad Prevents Overloading
  • Ground-Lift Switch Minimizes Hum
  • No Power Source Required
SKU: Mackie MDB-1P
Brand: Mackie
Department: Audio
Category: Others
Subcategory: Direct Box

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PHP 5,800.00

All prices are in Philippine pesos (PHP) and include VAT. Shipping charges (if any) are extra.


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We ship orders nationwide at competitive rates via trusted freight/courier to ensure that your order arrives at your doorstep on the time and in excellent condition. Accredited couriers are Lalamove, Grab, LBC, Abest, APcargo (Outside Metro Manila). Rates charges and lead time shall depend upon your chosen accredited courier.


The Mackie MDB-1P is a passive direct box designed to connect a single instrument such as a guitar, bass, or keyboard to a microphone preamp for musicians and audio engineers in recording sessions, houses of worship, and live stage applications. It converts a high-impedance, instrument-level signal via its 1/4" TS unbalanced input to a low-impedance, mic-level output via its balanced XLR 3-pin jack. A 1/4" thru jack allows simultaneous connection to an amplifier or pedalboard.

A -15 dB pad reduces the input level to prevent distortion when using a high-gain source, and the ground-lift switch inhibits hum caused by ground loops. Due to its passive design, the MDB-1P requires no batteries or power supply. A sturdy steel chassis enables confident use in the studio or on the road.

·         Connect an instrument such as a guitar, bass, or keyboard to a microphone preamp

·         Converts a high-impedance, unbalanced 1/4" input to a low-impedance, balanced XLR mic-level output

·         1/4" thru jack for routing to an amplifier

·         -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

Type Passive
Input Connections 1 x 1/4" TS unbalanced
Output Connectors 1 x 1/4" TS unbalanced
1 x XLR 3-pin balanced
Input Impedance 140 kOhms unbalanced
Output Impedance 400 Ohms unbalanced
Impedance Ratio 350:1
Pad -15 dB
High-Pass Filter None
Controls Pad
Ground-lift switch
Frequency Response 20 Hz to 20 kHz (±0.2 dB)
Signal to Noise Ratio Not specified by manufacturer
Dynamic Range 128 dB
Total Harmonic Distortion 0.002% from 1 kHz
Power Requirement None
Current N/A
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 1.05 lb
Box Dimensions (LxWxH) 6.9 x 5.9 x 2.9"

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