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Marantz MM7055

5-Channel Power Amplifier

Quick Specs

  • Type: Amplifier
  • Width: 17 3/8"
  • Height: 7 3/16"
  • Depth: 15 1/8"
  • Energy Star Rated: No
 
Power For Your System

The MM7055 power amplifier produces 140 watts of high current output from each of its five channels. This is "real world" power, too, measured across the full audio bandwidth (20 Hz - 20 kHz) at 8 ohms with 0.08% Total Harmonic Distortion. Among other attributes, this means the MM7055 is capable of long-term power delivery into low impedance speakers.

The Many Faces of Excellence

In practical terms, the MM7055 is ideal for a "5.1" home theater system, whether based on a moderately powered receiver or a surround sound processor. You can use it to power speakers in different areas of your home; stereo reproduction in two rooms plus a mono channel for secondary areas such as a den or kitchen. For more complex home theater systems, the MM7055 pairs with one or several MM7025s to help create a totally immersive "7.1" or "9.1" audio experience.

Inside The MM7055

A massive power supply includes a multiple-secondary EI-core transformer and over 65,000 F of custom-designed energy storage capacity. Critical circuit components from many world-class suppliers were chosen only after extensive listening tests. Among these, the LAPT Hyper Power output devices were first used in Reference Series components. Current feedback topology insures astounding accuracy and control under high-drive conditions.

A Temperature-Controlled Environment

Physically, the MM7055's output stages mount on an extruded aluminum "thermal tunnel" for efficient heat dissipation. With temperature-sensing forced air cooling, this configuration assures cool operating temperatures for long-term reliability, even when making full use of the amplifier's substantial output capabilities.

Flexible Connections

Balanced inputs and single-ended RCA inputs are both supported, and you can choose either type of input for each channel, individually, for easy and flexible connectivity. Audiophile grade, gold-plated four-way binding post speaker terminals insure tight connections to your choice of speaker wire.

Custom Touches

The MM7055 includes input and output jacks for DC "trigger" pulses as well as RC-5 jacks for total remote control convenience, even with legacy Marantz products.

The chassis itself is heavy gauge steel for maximum isolation from external vibration as well as electromagnetic and radio frequency interference. And chassis depth is less than 14 1/2" so the MM7055 will fit quite nicely on a shelf, in a cabinet, or in a conventional system rack with the optional rack mount kit RMK8003MM .

Power. Functionality. Dependability. And classic looks. The MM7055 is, simply speaking, a Marantz.

For operational and technical assistance 24/7, use our self help Online Support Center, where answers to many common questions can be found.

View Warranty information.

Features
Number of Channels 5
THX Yes
DTS Yes
Dolby Yes
DSD(SA-CD)/NEURAL Yes
SRS Yes
HDCD Decoder Yes
Current Feedback Topology Yes
Discrete Amplification Yes
Power Transformer Large Capacity EI
D/A Conversion Yes
Digital Signal Processing Yes
Video Off (Pure Direct) Yes
Source Direct Yes
Chassis Steel
Variable X-over Steel
Display Off Blue LED Illumination off mode available
Video Up-conversion Yes
Auto Calibration by MIC Yes
Satellite Radio Ready Yes
AM/FM Tuner Yes
Bass Redirection Yes
Lip-sync (digital audio delay) Yes
Software Upgradable Yes
In/outputs
HDMI In Yes
Component In Yes
S-Video In Yes
Composite In Yes
HDMI Out Yes
Component Out Yes
S-Video Out Yes
Composite Out Yes
Analog L&R In Yes
Analog L&R Out Yes
Digital Optical In Yes
Digital Coaxial In Yes
Digital Optical Out Yes
Digital Coaxial Out Yes
Other Yes
Pre-Amplifier Out Yes
Main Amplifier In Balanced & Unbalanced: 5ch (Exclusive use by a selector switch.)
Multi-Channel In Yes
Multi-Room Audio Out Yes
Multi-Room Video Out Yes
Multi-Room Speaker Out Yes
Speaker A/B Yes
Networking Yes
External control Yes
DC Triggers 1 In / 1 Out
D-Bus Remote (RC-5) In/Out 1-1
Flasher In/IR Receiver In/Emitter out 1/0/0
Front Panel A/V Inputs Yes
Headphone Out Yes
AC Outlets (Switched/Unswitched) Yes
Specifications
Power Output 140W (20Hz-20kHz, 0.08%)
S/N Ratio 105dB
Freq. Response (Analog In) 8Hz-100kHz (+/- 3dB)
Freq. Response (Dig In) Yes
Frequency Range Yes
S/N Ratio (Mono/Stereo) Yes
Frequency Range Yes
S/N Ratio Yes
Video Freq. Response (Component) Yes
Video Freq. Response (Composit, S-Video) Yes
Signal to Noise Yes
General
Color Black
Front Panel Aluminum/Glass-reinforced resin
Remote Control Yes
Power Requirement Yes
Power Consumption 660W (Standby: 0.2W)
Dimensions W x H x D (Inchs) 17-3/8 x 7-3/16 x 15-1/8
Weight (lbs) 34.6

Quick Specs


  • Appearance

  • Type: Amplifier

  • Dimensions

  • Width: 17 3/8"
  • Height: 7 3/16"
  • Depth: 15 1/8"

  • Features

  • Energy Star Rated: No

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.