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Designed for high-definition field production environments, the studio-quality MP-1 is an ideal line-driver for critical radio, television, and film applications.

The MP-1 is extremely durable and easy to use. With rugged mechanical and electrical construction and high-quality components, it will provide years of superb audio performance under the most punishing field conditions.


  • Superb audio specifications
  • 66 dB of gain, in eleven discrete steps
  • Transformer-balanced input and output
  • Phantom power - 48 volt or 12 volt
  • High pass filter @ 80 Hz or 160 Hz, 6 dB/octave
  • Limiter makes unit virtually "unclippable"
  • High current line output drive
  • Excellent immunity to RF interference.
  • Battery power (two x AA)
  • Durable mechanical construction
  • Specifications

    Equivalent Input Noise:
    -126 dBu (-128 dBV) maximum (150 ohm source, flat weighting, 22 - 22 kHz bandwidth, gain control set at 50% or higher, phantom power off)

    Output Clipping Level (Line):
    +22 dBu minimum with 100k ohm load, +20 dBu minimum with 600 ohm load

    Dynamic Range:
    110 dB minimum

    THD + Noise:
    0.05% maximum (from 60 Hz to 22 kHz @ +4 dBu output level, 22 Hz - 22 kHz filter bandwidth, gain control at 50%, phantom off)

    Transformer-balanced, 2k ohm input impedance

    Outputs (XLR):
    s/n < 0507 - impedance-balanced, 120 ohm output impedance, s/n >0507 - active-balanced, 120 ohm output impedance

    Outputs (Tape):
    Unbalanced, tip-left, ring-right, sleeve-ground, 2.4k ohm output impedance

    Power (Internal):
    2 AA alkaline batteries, 6 hours life typical with +4 dBu signal into 600 ohms, no phantom power

    Power LED:
    Green indicates power and good battery. Red indicates power and low battery. LED turns red when approximately 1 hour of battery life remain (with phantom power off). Green with external DC power.

    Frequency Response:
    20 Hz - 30 kHz, +0.1, -0.5 dB; -1 dB at 5 Hz & 50 kHz (relative to 1 kHz with 150 ohm source, gain controls set at 50%)

    Input Clipping Level:
    -10 dBu minimum

    Output Clipping Level (Tape):
    +11 dBu (2.75 V RMS) minimum with 100k ohm load

    Common Mode Rejection Ratio:
    100 dB minimum at 80 Hz, 60 dB minimum at 10 kHz

    Channel Separation:
    Greater than 80 dB at 1 kHz (gain controls set to 50%)

    High-Pass Filters:
    80 Hz or 160 Hz (switch selectable), 6 dB per octave

    Phantom Power:
    48 V through 6.8k resistors or 15 V through 680 ohm resistors (switch selectable)

    Thresholds adjustable per channel from -10 dBu to +17 dBu, 10:1 limiting ratio, 5 mS attack time, 100 mS release time, Amber/Red LED indicates limiting/clipping, Dual mono or stereo linked

    Internal Voltage Rails:
    ±15 V, regulated

    All inputs to all outputs, non-inverting. Pin-2 of XLRs "hot" to unbalanced inputs and outputs.

    Seven segment GaN (Gallium Nitride) LED meter with three intensities, peak responding

    Operating Temperature Range:
    0 to 70 degrees C, 32 to 160 degrees F

    43 mm x 94 mm x 140 mm (h x w x d), (1.7" x 3.7" x 5.5")

    Weight (unit only):
    0.8 kg, 2.0 lbs.

    Weight (packaged):
    1.2 kg, 3.0 lbs.

    Meets FCC Part 15 Class B, eligible to bear CE mark
    GTIN (UPC/EAN) : 020709341013
    Manufacturer Part Number : MP-1



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