Marantz MM7055 5 Ch Power Amplifier

Marantz MM7055 - 5-Channel Power Amplifier

The MM7055 is the five-channel option in Marantz's extended line-up of power amplifiers. Based on the technology used in the MM8003 and using the exact same chassis, it delivers a thumping 140W RMS into 8-ohm speakers in each of the five channels, while the ultra-wide bandwidth current feedback technology easily handles the highest SACD frequencies – this also makes it ideal for the high definition DTS Master Audio and Dolby TrueHD formats too. The result? Totally precise tonal and image balance, speed and dynamics. And on top of all that, you also get XLR audio inputs, DC triggers and a Marantz control bus system for remote on/off. This is power and convenience to take your breath away.

Key Features

• 5ch power amplifier
• Delivers 5x 140 Watts (8 ohm) / 5x 170 Watts (6 ohm) RMS (20Hz-20kHz)
• Current Feedback Amplifier Output Stage Circuitry
• High Instantaneous Peak Current design
• Low Impedance Continuous Drive Capability
• High-performance power supply
• XLR/RCA inputs
• Gold Plated, High-Grade Loudspeaker Terminals
• Flasher Input/DC Trigger In/Out /RC-5 Remote Control
• Custom Sound Tuning
• Marantz Reference-Grade Filter Capacitors and High-Speed Output Transistors
• Porthole Display with Blue Illumination Accent

Owner's Manual (PDF, 1MB)

	The Many Faces Of Excellence In practical terms, the MM7055 is ideal for a “5.1” home theatre system, whether based on a moderately powered receiver or a surround sound processor.		Power For Your System The MM7055 power amplifier produces 140 watts of high current output from each of its five channels.

	Getting Connected Both single-ended RCA and balanced XLR inputs assure system compatibility regardless of your preamplifier or processor.		More Marantz Power A massive power supply includes a multiple-secondary EI-core transformer and over 65,000 µF of custom-designed energy storage capacity.

	First Impressions If you’re impressed by elegantly restrained industrial design, the MM7055 is guaranteed to make a lasting – and very positive – impression.		Cool Machine, Warm Sounds Physically, the MM7055’s output stages mount on an extruded aluminum “thermal tunnel” for efficient heat dissipation.

The Most Musical Sound

Extensively tuned by Marantz sound masters to deliver an exquisite sonic signature. No component leaves the hands of Marantz sound masters until it passes rigorous testing. Envelop yourself with the most musical sound, from any source.

The Power Supply

A massive power supply includes a multiple-secondary EI-core transformer and over 65,000 µF of custom-designed energy storage capacity to meet the demands of today’s current-hungry loudspeaker designs. This combination instantaneously delivers peak power to all amplifier stages for distortion-free reproduction of the most complex sources.

Marantz Sound Quality

The MM7055’s advanced technology serves all your listening needs. Current feedback circuits, also used in Marantz’s Reference Series amps, insure the purest sonic reproduction regardless of source. Another MM7055 virtue, and one directly traceable to its substantial current capability, is the control it establishes over difficult speakers to reproduce both dynamic musical peaks and whispered dialogue without blemish.

Output Devices

In the final amplification stage, specially selected LAPT Hyper-Power output transistors, originally selected for Reference Series use, deliver fortissimo and pianissimo passages with equal aplomb. To make sure they’re always operating at ideal temperatures, these transistors are mounted on a forced-air “thermal tunnel.”

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.

Remote Control

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.

You’ll find rear panel connections for a “flasher” input that conveys On/Off commands from an infrared (IR) remote controller. There’s a DC trigger input (and output) that lets you ”daisy chain” one or more devices to turn on and off in synchronization with your surround processor. If you’re going to use the MM7055 with legacy Marantz products, there are RC-5 connectors to give you a level of operating convenience you might not have thought possible.

A Versatile Power Amp

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.

Built To Perform

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 14½” so the MM7055 will fit quite nicely on a shelf, in a cabinet, or in a conventional system rack.

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

Backed by Over 65 Years of Heritage

The most musical sound. Founded in 1953, Marantz has a long and rich history of designing audio components embraced by music lovers and critical listeners around the world. Because Music Matters, the MM7055 carries on the long Marantz tradition of delivering a best-in-class listening experience for music and cinema.