Sound Devices MM-1 Specifications

SOUND

MM-1

DEVICES

Description

The portable MM-1 combines microphone
preamplification and headphone monitoring in one
compact product. Designed for demanding radio,
television, and multimedia productions, the MM-1 is a
no-compromise, studio-quality microphone preampli­fier with phantom power, high-pass filter, and built-in
limiter. Its monitoring function provides a headphone
level signal of microphone audio and an external, bal­anced line-level signal. The MM-1 is at home in the
most complex broadcast remotes, theatrical produc­tions, and intercom setups.

The MM-1 is built to Sound Devices high standards
of audio and mechanical quality and will provide
years of performance under the most punishing field
conditions.

Microphone Preamplifier

with Headphone Monitor

Features

High Performance Microphone Preamplifier

• Maximum of 66 dB of gain in eleven steps for accurate,
repeatable gain settings.

• Wide dynamic range and audio bandwidth.

• High immunity to RF interference.

• Transformer-balanced input and output using premium
Lundahl input transformer and custom-designed output
transformer.

• High-current line output driver capable of driving very long
cable runs.

• Two-position high pass filter at 80 Hz and 160 Hz.

• Selectable 48-volt or 12-volt phantom, or T-powering.

• Virtually “unclippable” dual-stage opto-isolator peak limiter.

Flexible Headphone Monitoring

• Monitor preamp audio and line-level monitor audio.

• Front panel headphone connector.

• Front panel headphone level control.

• Separate, front panel monitor level control.

Durable Mechanical Construction

• Easy access battery compartment (2 x AA) with external DC
power connector (5 - 17 VDC).

• High-strength extruded aluminum chassis with metal knobs
and protective end rails.

• Removable belt clip for easy mounting.

www.sounddevices.com

SOUND
DEVICES

FRONT PANEL

MM-1

Microphone Preamplifier

with Headphone Monitor

Gain:
(Mic - Line)

Gain Accuracy
(Mic - Line)

Frequency Response
(Mic - Line)

Equivalent Input
Noise (Mic)

Output Clipping Level
(Line)

Input Clipping Level (Mic)

Dynamic Range
(Mic to Line)

THD + Noise

Common Mode
Rejection Ratio

0 dB to 66 dB input to output, switch selectable

+0.6, -0.1 dB with reference to front panel gain mark­ings (150 ohm source, 100 k load impedances)

20 Hz –20 kHz, +0.1, -0.5 dB, -1 dB at 50 kHz
(relative to 1 kHz level with 150 ohm source)

-126 dBu (-128 dBV) maximum
(150 ohm source, flat weighting, 22 Hz – 22 kHz band­width gain setting 36 dB or greater)

+22 dBu minimum with 100k ohm load
+20 dBu minimum with 600 ohm load

+4 dBu minimum at the 0 or +18 dB gain setting

122 dB minimum at the +18 dB gain setting

0.05% maximum
(from 50 Hz – 22 kHz @ +4 dBu output level, 22 Hz
– 22 kHz filter bandwidth, +46 dB gain setting

100 dB minimum at 80 Hz
60 dB minimum at 10 kHz

BACK PANEL

BLOCK DIAGRAM

SOUND DEVICES

Sound Devices, LLC

300 Wengel Drive, P.O. Box 576
Reedsburg, Wisconsin 53959 USA
tel: [phone] fax: [phone]

www.sounddevices.com