Marantz MM8077 seven channel amplifier teardown

Designed for the ultimate music and movie surround sound experience, the MM8077 7-channel power amplifier is equipped with the same amplifier technologies that are incorporated in our reference class hi-fi amplifiers, including our unique current feedback discrete power amplifier stage design, which features a high slew rate that provides a wide bandwidth for the utmost enjoyment of today’s high resolution audio formats. All output stages feature identical topology for uniform high quality sound across all channels, and the MM8077 provides the option to choose between balanced (XLR) and unbalanced (RCA) inputs for each channel, for maximum system configuration flexibility. High current, high bandwidth discrete power transistors can handle short term musical bursts with aplomb, even into difficult low impedance speaker loads.

Features:

7 Channels
Current Feedback Topology
Toroidal Power Transformer
High Grade Audio Components
Customised Components
Aluminium extrusion heat sink
Copper plated chassis

Other:

Linear Drive Power Supply
Input buffer amp
Separate Solid Heat Sinks
Power Amp direct
Standby Mode (Auto)

Inputs/Outputs:

7 Balanced In
7 Main-in
Power Amp Direct IN
Gold Plated Cinch
Speaker Terminal: Screw
Number of terminals - 7
Remote Power Control Trigger - In Out
Flasher In

Specifications:

Power Output (8 / 6 Ohm RMS) - 150 W / 180 W
Frequency Response - 10Hz 100kHz (+-3 dB)
Total Harmonic Distortion - 0.03% (20 Hz 20 kHz)
Damping Factor - 100
Input Sensitivity: High level - 1.2 V / 22 kohms
Input Sensitivity: Balanced High level - 2.4 V / 30 kohms
Signal to Noise Ratio: High level - 105 dB

General:

Available colours: Black
Metal Front Panel
Power Consumption 880 Watts
Standby Consumption 0.4 Watts
Auto power off
Detachable Power Cable
Maximum Dimensions (W x H x D) in mm - 440 x 185 x 384
Weight - 18 kg

source: marantz.com

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