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Sound Devices MM-1 Portable
Mic Preamp with Headphone Monitor
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MM-1 High Quality
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 ±15 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.
The MM-1 is designed to be durable. Its aluminum chassis, oversized
end panels, machined knobs, and panel mounted connectors assure
reliable mechanical operation.
MM-1 Front
Panel
MM-1 Back Panel
 
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Product Code:SDMM1
| C931-TA-XL-2 |
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| TA3-F to XLR-M 15"
Adapter Cable |
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Key Features of
MM-1
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Maximum of 66 dB of
gain, in eleven discrete steps
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Dynamic range
exceeding 120 dB
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10 Hz to 50 kHz
audio bandwidth
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High immunity to RF
interference
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High current line
output driver
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Transformer-balanced
input and output
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Extended range peak
limiter via dual opto-isolators makes preamplifier virtually
"unclippable"
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Selectable 48-volt /
12-volt phantom power or 12-volt “T" power
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High-pass filter @
80 or 160 Hz, 6 dB per octave
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Headphone monitoring
of microphone audio, monitor audio, or a mix of both
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Monitor input
accepts mono, balanced or unbalanced line-level inputs on 1/4-inch
tip-ring-sleeve connector
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Separate level
control of Monitor gain and overall headphone gain
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Split ear function
via DIP switches
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Internal battery
power (two-AA)
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Excellent battery
life with alkaline and NiMH rechargeable batteries
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External 5-17 VDC
powering (plug included)
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High-strength
aluminum chassis with durable belt clip
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Specifications of
MM-1
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| Gain: |
(Mic - Line): 0 dB to 66 dB input to output, switch
selectable |
| Frequency
Response: |
(Mic - Line) 20 Hz –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 – 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 – 22 kHz @ +4 dBu output
level, 22 Hz – 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) |
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