Mackie MDB-1A Active Stereo Direct Box

Every musician and engineer needs a reliable direct box. If you're working with a high-input, active instruments like electric guitars and basses that need lots of headroom, the MDB-1A provides you everything you need for a direct in with its unbalanced 1/4" input and thru, -20 dB pad and a balanced XLR output with switchable ground lift. This DI box is flexible; at a flip of a switch you can convert the thru port to a second input for a stereo setup that then gets summed mono into the balanced XLR output. Choosing Mackie equipment means choosing gear that is Built-Like-A-Tank™ and provides ultra-low noise and distortion.

Features

• Active circuitry offers higher headroom for increased noise and distortion performance
• High-impedance 1/4" input with Thru output
• Balanced XLR output with Ground Lift
• Low Cut and Polarity switches
• Merge switch allows connection of stereo sources which are then summed to mono at the output, perfect for stereo sources like keyboards media players
• -20dB pad ensures distortion-free performance when connecting to high-level sources
• Powered via 48V Phantom Power
• Built-Like-A-Tank™ construction

Specifications

• Audio Performance:
  • Frequency Response: 20 Hz - 20 kHz, ±0.5 dB
  • Signal-to-Noise Ratio: 90 dB
  • Dynamic Range: 130 dB
  • Total Harmonic Distortion: 0.02% THDF @ 1 kHz
  • Pad: -20 dB
• Input/Output:
  • Input Type: Female 1/4" unbalanced
  • Input Impedance: 330 kΩ unbalanced
  • Thru: 1/4" unbalanced
  • Output Type: Male XLR balanced
  • Output Impedance: 150 Ω balanced
• Power:
  • Input Type: 48V Phantom
  • Current Draw: < 4.0 mA DC
• Display LEDs: Front merge on/off
• Dimensions (H x W x D): 1.5" x 3.4" x 5.8"
• Weight: 0.8 lbs.