Sound Devices MM-1 Line Driver / HP Monitor
Sound Devices MM-1 Line Driver / HP Monitor

Sound Devices MM-1 Line Driver / HP Monitor

$559.00 USD

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SKU: SOU MM1 Categories: , Tag:

Product Description

Special considerations may apply if this item is received outside of North America. Please read for details.

High Quality Portable Mic Preamp with Headphone Monitor

Highly versatile and portable, Sound Devices’ MM-1 is a single-channel, portable microphone preamplifier with a powerful headphone monitoring function. Proven in mission-critical applications, the high-performance microphone preamplifier uses a transformer-balanced input and output with a bipolar ᄆ15 volt power supply to produce low-noise, low-distortion gain at all switch positions. It features an “unclippable” dual-stage limiter and two-position high-pass filter. Flexible microphone powering provides phantom power at 48 volts or 12 volts and 12-volt T-power. It is powered from two-AA batteries or external 5-18 VDC.

The MM-1 is at home in high-definition television production, corporate/industrial environments, radio/television announce booths, and music production. Its headphone monitor is an advantage in applications where communications channels or mix-minus feeds need to be monitored in headphones. The user can monitor both microphone audio and external audio sources in headphones with level control.

Key Features

  • Maximum of 66 dB of gain, in eleven discrete steps
  • Dynamic range exceeding 120 dB
  • 10 Hz to 50 kHz audio bandwidth
  • High immunity to RF interference
  • High current line output driver
  • Transformer-balanced input and output
  • Extended range peak limiter via dual opto-isolators makes preamplifier virtually “unclippable”
  • Selectable 48-volt / 12-volt phantom power or 12-volt “T” power
  • High-pass filter @ 80 or 160 Hz, 6 dB per octave
  • Headphone monitoring of microphone audio, monitor audio, or a mix of both
  • Monitor input accepts mono, balanced or unbalanced line-level inputs on 1/4-inch tip-ring-sleeve connector
  • Separate level control of Monitor gain and overall headphone gain
  • Split ear function via DIP switches
  • Internal battery power (two-AA)
  • Excellent battery life with alkaline and NiMH rechargeable batteries
  • External 5-17 VDC powering (plug included)
  • High-strength aluminum chassis with durable belt clip

The MM-1 is designed to be durable. Its aluminum chassis, oversized end panels, machined knobs, and panel mounted connectors assure reliable mechanical operation.

Gain: (Mic - Line): 0 dB to 66 dB input to output, switch selectable
Frequency Response: (Mic - Line) 20 Hz ヨ20 kHz, +0.1, -0.5 dB, -1 dB at 50 kHz(relative to 1 kHz level with 150 ohm source)
Equivalent Input Noise: (Mic) -126 dBu (-128 dBV) maximum (150 ohm source, flat weighting, 22 Hz ヨ 22 kHz bandwidth gain setting 36 dB or greater)
Dynamic Range: (Mic to Line) 122 dB minimum at the +18 dB gain setting
THD + Noise: 0.05% maximum (from 50 Hz ヨ 22 kHz @ +4 dBu output level, 22 Hz ヨ 22 kHz filter bandwidth, +46 dB gain setting
Gain Accuracy: (Mic - Line) +0.6, -0.1 dB with reference to front panel gain markings (150 ohm source, 100 k load impedances)
Output Clipping Level: (Line) +22 dBu minimum with 100k ohm load+20 dBu minimum with 600 ohm load
Input Clipping Level: (Mic) +4 dBu minimum at the 0 or +18 dB gain setting
Common Mode Rejection Ratio: 100 dB minimum at 80 Hz60 dB minimum at 10 kHz
Weight: 0.7 kg (1.1 lbs)
Dimensions: 49 mm x 95 mm x 166 mm, 1.95" x 3.75" x 6.55" (h x w x d)

MM-1 User Manual (375K PDF)

MM-1 Fact Sheet (175K PDF)