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Marantz MM7055 Power Amplifier

The new MM7055 is the five-channel option in this year's extended line-up of main amplifiers. Based on the technology used in the MM8003 and using the exact same chassis, it delivers a thumping 140W rms into 8 ohm to each of the channels, while the ultra-wide bandwidth current feedback technology easily handles the highest SACD frequencies

SKU
MM7055
Special Price £1,099.00 Regular Price £1,199.00

Marantz - MM7055

140W 5-CHANNEL CURRENT FEEDBACK POWER AMPLIFIER

The 5 channel MM7055 is expertly crafted to meet all your high power needs with 140W per channel and drives even the most demanding surround speaker setups. The entire unit is designed to deliver consistent and precise power whenever needed.


KEY FEATURES:

Power For Your System
The MM7055 power amplifier produces 140 watts per channel (8-ohm, 20Hz – 20kHz, 0.08% THD, 2ch. drive) of high current output from each of its five channels.

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. Two or more can be used to build an advanced system. A combination with MM7025 or MM8077 is possible.

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.

Cool Machine, Warm Sounds
Physically, the MM7055’s output stages mount on an extruded aluminum “thermal tunnel” for efficient heat dissipation.


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.

Current Feedback
Current Feedback amplification is a well known, Marantz’ original circuit technology. The Current Feedback amplifier technology fits perfectly with the high requirements set for Super Audio software providing wide-bandwidth, high-speed reproduction. The impedance at the Current Feedback point is limited resulting in a very low phase shift. Marantz receivers and amplifiers equipped with Current Feedback can keep the phase compensation via Negative FeedBack (NFB) to a minimum, resulting in high through-rate, excellent transient response and superb sonic transparency for the full bandwidth. Unlike conventional Voltage Feedback amplification, the Current Feedback amplification makes the power amplifier in-sensitive to difficult loudspeaker loads.

Customized Components
On paper an electrical component might look excellent but the result may fall short of the combined design expectations. Marantz selects the appropriate components for the specific design application. In some cases it’s simply not possible to use standard components that meet the high Marantz standards. These components will then be specially made for Marantz in close cooperation with the Marantz engineers.

DC-Trigger
A DC trigger is an assignable voltage output which can automatically control for example an electrical projection screen, lowering it when the DVD input is chosen on the receiver.

IR Flasher IN
The IR-Flasher IN is a standardized connection to control the AV system by external IR receivers independent of the infra red control format used. On the IR-Flasher OUT an IR-Emitter can be connected to controlled third brand components. The third connection link to this is the IR-Receiver INPUT which is similar to the IR-Flasher In, but it outputs a voltage to directly feet an external IR-Receiver eye. Please check capability per product in the specification section.

Linear drive power supply
LDPS - Marantz own technology to design a power supply capable to follow all details of an audio signal to reproduce the finest sound quality.

MM7055

Features

Channels 5
Current Feedback Topology Yes
Phono EQ: Standard / Current Feedback / Constant Current Feedback No / No / No
HDAM version No
Power Transformer: Toroidal / El No / Yes
High Grade Audio Components Yes
Customised Components Yes
Symmetric PCB Layout No
Aluminium extrusion heat sink Yes
Copper Plated Chassis No
Tri Tone Control (Bass / Mid / Treble) No
Balance / Bass / Treble / Loudness No


Others

Linear Drive Power Supply Yes
CCNE No
Liniear volume control No
BTL Possibility No
BI-AMP and Multichannel option No
Choke input No
Shottky diodes No
Input buffer amp (all inputs / CD only) Yes / No
Separate Solid Heat Sinks No
System block shielding: Copper / metal / none No / No / No
Double Layer Bottom Plate No
Low noise LCD display Yes
Low noise LED display No
Power Metre : Analogue / Digital No / Yes
Source Direct No
Power Amp direct Yes
Standby Mode Yes
5mm aluminium top plate No


Inputs/Outputs

Audio Inputs No
Phono Input: MM / MC No
Audio Outputs No
Balanced In / Out 5 / No
Pre-out / Main-in No / 5
Power Amp Direct IN No
Gold Plated Cinch No
Speaker A / B No
Speaker Terminal: Screw / Marantz / WBT Yes / No / No
Number of terminals 5
D-Bus Yes
Floating Control Bus (3.5 mm mono jack x 2) No
Remote Power Control Trigger - In Out Yes
Flasher In / IR Receiver In Yes / No
Headphone Out No
iPod input (direct / docking station) No / No


Specifications

Power Output (8 / 4 Ohm RMS) 140 W / 170 W (6)
Power Output (8 / 4 Ohm DIN) No
Power Output (8 / 4 Ohm IHF) No
Bridged Power Output (8 Ohm RMS) No
Frequency response 8 Hz-100 kHz (+-3 dB)
Total Harmonic Distortion 0.03% (20 Hz - 20 kHz)
Damping Factor 100
Input Sensitivity: MM No
Input Sensitivity: MC No
Signal to Noise Ratio: MM/MC No
Input Sensitivity: High level 1.2 V / 22 K
Input Sensitivity: Balanced High level 2.4 V / 30 K
Signal to Noise Ratio: High level 105 dB


General

Available Colors: Gold / Silver / Black / Silver-Gold No / No / Yes / No
Metal Front Panel Yes
Power Consumption in W 400
Standby Consumption in W 0.4
Auto Power off Yes
Detachable Power Cable Yes
Remote Control No
System Remote Function No
Maximum Dimensions (W x D x H) in mm 440 x 183 x 384
Weight in kg 15.2