Sound Devices MP-1 Portable Microphone Preamp

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Designed for high-definition field production environments, the full-featured 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.

Features:

• 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

• 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)
• Inputs: 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
  • EXternal: 5 - 18 VDC via 4-pin Hirose connector (pin-4 positive, pin-1 negative), voltages above 14 VDC cause no damage to unit, but will open an internal poly fuse. Poly fuse will reset when voltage is removed.
• 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: > 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)
• Limiter: Thresholds adjustable per channel from -10 dBu to +18 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
• Polarity: All inputs to all outputs, non-inverting. Pin-2 of XLRs "hot" to unbalanced inputs and outputs.
• Metering: Seven segment GaN (Gallium Nitride) LED meter with three intensities, peak responding
• Operating Temperature Range: 32° to 160°F | -0°C to 70°C
• Certifications: Meets FCC Part 15 Class B, eligible to bear CE mark
• Dimensions (H x W x D): 1.7 x 3.7 x 5.5 in | 43 x 94 x 140 mm
• Weight: 2 lbs | .8 kg (unit only)