Marantz MM7055 5-Channel Power Amplifier




The new MM7055 is the five-channel option in the line-up of main amplifiers.

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$ 2,999.00

In-Stock At Supplier

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 – 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.

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.


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.


Channels 5
Current Feedback Topology
Phono EQ: Standard / Current Feedback / Constant Current Feedback - / - / -
HDAM version
Power Transformer: Toroidal / El - / o
High Grade Audio Components
Customised Components
Symmetric PCB Layout
Aluminium extrusion heat sink
Copper plated chassis
Tri Tone Control (Bass / Mid / Treble)
Balance / Bass / Treble / Loudness


Linear Drive Power Supply
Liniear volume control
BTL Possibility
BI-AMP and Multichannel option
Choke input
Shottky diodes
Input buffer amp (all inputs / CD only) o / -
Separate Solid Heat Sinks
System block shielding: copper / metal / none - / - / -
Double Layer Bottom Plate
Low noise LCD display
Low noise LED display
Power Meter : Analog / Digital - / o
Source Direct
Power Amp direct
Standby Mode
5mm aluminium top plate


Audio Inputs
Phono Input: MM / MC
Audio Outputs
Balanced In / Out 5 / -
Pre-out / Main-in - / 5
Power Amp Direct IN
Gold Plated Cinch
Speaker A / B
Speaker Terminal: Screw / Marantz / WBT o / - / -
Number of terminals 5
Floating Control Bus (3.5 mm mono jack x 2)
Remote Power Control Trigger - In Out
Flasher In / IR Receiver In o / -
Headphone Out
iPod input (direct / docking station) - / -


Power Output (8 / 4 Ohm RMS) 140 W / 170 W (6)
Power Output (8 / 4 Ohm DIN)
Power Output (8 / 4 Ohm IHF)
Bridged Power Output (8 Ohm RMS)
Frequency Response 8 Hz-100 kHz (+-3 dB)
Total Harmonic Distortion 0.03% (20 Hz - 20 kHz)
Damping Factor 100
Input Sensitivity: MM
Input Sensitivity: MC
Signal to Noise Ratio: MM / MC
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


Available colors: Gold / Silver / Black / Silver-Gold - / - / o / -
Metal Front Panel
Power Consumption in W 400
Standby Consumption in W 0.4
Auto power off
Detachable Power Cable
Remote Control
System Remote Function
Maximum Dimensions (W x H x D) in mm 440 x 183 x 384
Weight in kg 15.2

New Zealand Marantz Official Product. Come with Marantz Manufactures Warranty.