Undertone Audio MPDI-4

Features
• -10 to -60 dB boost range (in stepped 5 dB increments)
• Switchable -20 dB input pad and -10 dB output pad
• Instrument DI
• Switchable 600 ohm output load
• Switchable Low impedance mode ideal for passive ribbon microphones
• Front panel XLR–1/4" (DI) combo input
• Phase reverse switch
• + 48 V phantom power
• Bypass-able input and output transformers
• Inputs/Outputs (all XLR):
• Mic-pre Input
• Mic-pre direct Line Output

Specifications
• Input Volatge: 110-120/220-240 VAC, 60/50 Hz
• Maximunm Power Consumpion: 25W
• Input Impedance:
  - Mic IN Transformerless: 2 kΩ
  - Min IN HI: 2 kΩ
  - MIC IN LOW: 500 Ω
  - DI: 4.7 MΩ
• Output Impedance: Mic Out 47Ω
• Frequency Response:
  - MIC PREAMP 10 Hz - 80 kHz +0 /-1 dB
  - LINE IN/OUT 10 Hz - 50 kHz +0 /-1 dB
• Noise Floor:
  - MIC PREAMP -128 dBu (20 Hz - 20 kHz)
  - MAX LEVEL BEFORE CLIP
  - MIC PREAMP +27 dBu (or better)
• Distorsion: Mic Preamp 0.003% at +27dBu
• Dimentions:
  - FRONT TO BACK 12.25” (WITH HEAT SINKS and KNOBS) 14”
  - LEFT TO RIGHT 17.25” (WITH RACK EARS) 19”
• Weight: Actual 12 lbs / Shipping weight: 15.8 lbs