Undertone Audio MPDI-4 - 4-Channel Mic Preamp & DI

Undertone Audio MPDI-4 

The UTA MPDI-4 is as musical as it is powerful and flexible. It features 4 individual Mic Preamp/DI circuits housed in a single 1RU chassis.  With bypass-able transformers, switchable output headroom, and adjustable THD characteristics, the sound of the MPDI-4 can range from astonishingly pristine to warm, thick, and harmonically colorful. It may well be the only preamp that is truly perfect for every situation!

UTA 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
• + 48V phantom power
• Bypass-able input and output transformers
• Inputs/Outputs (all XLR):
• Mic-pre Input
• Mic-pre direct Line Output

UTA MPDI-4 Specifications

• INPUT VOLTAGE: 110-120/220-240 VAC, 60/50 Hz
• MAINS FUSE
  • 110V: T 0.4 A
  • 240V: T 0.2 A
  • MAXIMUM POWER CONSUMPTION: 25 W
• INPUT IMPEDANCE
  • MIC IN TRANSFORMERLESS: 2 kΩ
  • MIC IN HI: 2 kΩ
  • MIC IN LOW: 500 Ω
  • DI: 4.7 MΩ
• OUTPUT IMPEDANCE (MIC OUT): 47 Ω
• 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)
• DISTORTION (MIC PREAMP): .003% at +27 dBu
• DIMENSIONS
  • 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: 15.8 lbs