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.

MPN: MDB-2P
UPC: 663961053999

• 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
  
  
• 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