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Sound Devices MP-1 Portable Microphone Preamplifier

MP-1 Portable, battery powered Microphone Preamplifier with phantom power
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.
Portable, single channel, battery powered microphone preamplifier with 20 Hz – 50 kHz bandwidth and >120 dB dynamic range. Features include 48-volt and 12-volt phantom power, high pass filter, limiter, transformer-balanced input and output. Powered by 2 AA batteries.


TA3-F to XLR-M 15" Adapter Cable

Sound Devices MP-1 Portable Microphone Preamplifier
Product Code:SDMP1
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Key Features of MP-1

  • 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 of MP-1

Gain: 0 dB to 66 dB input to output, switch selectable
Gain Accuracy: +0.6, -0.1 dB with reference to front panel gain markings (150 ohm source, 100k ohm load impedances)
Frequency Response: 20 Hz - 22 kHz, +0.1, -0.5 dB, -1 dB at 50 kHz (relative to 1 kHz level with 150 ohm source)
Equivalent Input Noise: -126 dBu (-128 dBV) maximum (150 ohm source, flat weighting, 22 - 22 kHz bandwidth, gain setting 36 dB or greater)
Output Clipping Level: +22 dBu minimum with 100k ohm load; +20 dBu minimum with 600 ohm load
Input Clipping Level: +4 dBu minimum at the 0 or +18 dB gain setting
Dynamic Range: 122 dB minimum at the +18 dB gain setting
THD + Noise: 0.05% Maximum (from 60 Hz to 22 kHz @ +4 dBu output level, 22 Hz - 22 kHz filter bandwidth, +46 dB gain setting)
Common Mode Rejection Ratio: 100 dB minimum at 80 Hz; 60 dB minimum at 10 kHz
Input: Transformer-balanced, 2000 ohm input impedance
Output: Transformer-balanced, 130 ohm output impedance
Phantom Power: 12V or 48V (switch selectable) per DIN 45 596 specification
Limiter: Limits to +17 dBu output level; 10:1 limiting ratio; 5 mS attack time, 100 mS release time; Amber/Red LED indicates limiting/clipping
High-Pass Filter: 80 Hz or 160 Hz (switch selectable), 6 dB per octave
Internal Voltage Rails: +15 V and -15 V, regulated
Operating Temperature Range: 0 to 70 degrees C (32 to 160 degrees F)
Power: 2 AA batteries, 24 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 4 hours of battery life remain
Polarity: Mic input to line output is non-inverting
Dimensions: 43 mm x 94 mm x 140 mm (h x w x d) (1.7" x 3.7" x 5.5")
Weight (unit only): 0.56 kg (1.24 lbs.)
Weight (packaged): 0.86 kg (1.90 lbs.)
Certification: Meets FCC Part 15 Class B, Eligible to bear CE mark


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