Marantz MM7055 5 Channel Power Amplifier

Ideal for Home Theater or Distributed Audio

From its sculptured front panel to its high quality binding-post loudspeaker terminals, the MM7055 five channel power amplifier brings Marantz sound quality to virtually any music or home theater system. Using technologies originally developed for the exclusive Marantz Reference Series, this flexible amplifier boasts many possible uses.

For example, the MM7055 is ideal for a 5.1 home theater system. 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.

The MM7055 produces 140 watts of high current output from each of its five channels. This is “real world” power 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.

Inside the MM7055

A massive power supply includes a multiple-secondary EI-core transformer and over 65,000 µF 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.

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.

Balanced and Unbalanced 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.

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” (without connectors) so the MM7055 will fit quite nicely on a shelf, in a cabinet, or in a conventional system rack with an optional rack mount kit.

• 5-channel home theater amp
• Great for distributed audio
• 140 watts of high current output from each of its five channels at 8 ohms with 0.08% Total Harmonic Distortion
• Massive power supply
• Multiple-secondary EI-core transformer and over 65,000 µF of custom-designed energy storage capacity
• Critical circuit components from many world-class suppliers
• LAPT Hyper Power output devices
• Current feedback topology
• Output stages mount on an extruded aluminum “thermal tunnel”
• Temperature-sensing forced air cooling
• Balanced inputs and single-ended RCA inputs
• Audiophile grade, gold-plated four-way binding post speaker terminals
• Custom install features: input and output jacks for DC trigger, RC-5 jacks
• Heavy gauge steel chassis
• Chassis depth is less than 14-1/2” (without connectors)

• Power Output (8 Ohm): 140W (20 Hz - 20 kHz, 0.08%) x 5 channels
• S/N Ratio: 105 dB
• Frequency Response (Analog In): 8 Hz - 100 kHz (+/- 3 dB)
• Total Harmonic Distortion: 0.08%
• Power Consumption: 660W (Standby: 0.2W)
• Dimensions: 17-3/8" wide, 7-3/16" high, 14-1/2" deep (15-1/8" deep with connectors)
• Weight: 34.6 lbs.