Sound Devices MM-1 Portable Mic Preamp with Headphone Monitor
- Single-channel mic preamp with headphone monitor
- 48 V or 12 V phantom, T-power, limiter, and high-pass filter
- Runs on two AA batteries or external DC
$945.00 USD
In Stock
Sound Devices MM-1 Portable Mic Preamp with Headphone Monitor
The Sound Devices MM-1 is a portable, single-channel microphone preamp with a headphone monitor, powered by two AA batteries or an external 5 to 17 VDC supply.
Gain runs up to 66 dB in eleven steps, and its transformer-balanced input and output and bipolar ±15 V internal supply keep it low-noise and low-distortion at every switch position.
Limiter, Filter, and Powering
A dual-stage limiter built on dual opto-isolators makes the preamp very hard to clip, and the high-pass filter rolls off at 80 or 160 Hz. The input supplies 48 V or 12 V phantom power or 12 V T-power, and a high-current driver feeds the line output.
Headphone Monitoring
The headphone output carries the microphone, a separate line-level monitor input on a 1/4 in TRS jack, or a mix of the two. One control sets the monitor input level and another sets the overall headphone level. The monitor input suits a communications channel or a mix-minus feed heard alongside the mic, and DIP switches set a split-ear mode.
Build
It has an aluminum chassis with oversized end panels, machined knobs, panel-mounted connectors, and a belt clip.
Features
- Up to 66 dB of gain in eleven steps
- Dynamic range over 120 dB; 10 Hz to 50 kHz bandwidth
- Transformer-balanced input and output
- Dual-stage opto-isolator limiter
- 48 V or 12 V phantom power, or 12 V T-power
- High-pass filter at 80 or 160 Hz, 6 dB per octave
- Headphone monitor of the mic, a line input, or a mix
- Two AA batteries or external 5 to 17 VDC
- Aluminum chassis with belt clip
- One-year warranty, two years with registration
What's Included
- MM-1 Mic Preamp
- Coaxial female power connector
- 4 × adhesive rubber bumpers
Specifications
| Audio | |
|---|---|
| Gain (Mic to Line) | 0 to 66 dB, switch selectable |
| Frequency Response | 20 Hz to 20 kHz, +0.1/−0.5 dB; −1 dB at 50 kHz (re 1 kHz, 150 ohm source) |
| Equivalent Input Noise | −126 dBu (−128 dBV) maximum (150 ohm source, flat weighting, 22 Hz to 22 kHz, gain 36 dB or greater) |
| Dynamic Range | 122 dB minimum at the +18 dB gain setting |
| THD + Noise | 0.05% maximum (50 Hz to 22 kHz at +4 dBu output, +46 dB gain) |
| Gain Accuracy | +0.6/−0.1 dB re front panel markings |
| Input Clipping Level | +4 dBu minimum at the 0 or +18 dB gain setting |
| Common Mode Rejection | 100 dB minimum at 80 Hz 60 dB minimum at 10 kHz |
| Output Clipping Level | +22 dBu minimum into 100k ohms +20 dBu minimum into 600 ohms |
| Power and Physical | |
| Microphone Powering | 48 V or 12 V phantom; 12 V T-power |
| Power | Two AA batteries (internal) or external 5 to 17 VDC |
| Dimensions (H × W × D) | 49 × 95 × 166 mm 1.95 × 3.75 × 6.55 in |
| Latest Specifications | Specifications are subject to change without prior notice. For current information, visit sounddevices.com. |
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