Even with the advent of 7.2- and 9.2-channel surround sound systems, most home theater lovers still opt for tried-and-true 5.1-channel sound. The Marantz MM7055, a 5-channel power plant, is built as the primary companion to its AV7005 preamp/processor. You won't have to buy more amp channels than you need, but you can easily add one or more MM7025 2 x 140-watt amplifiers to your setup for more surround channels or multi-room audio.

Behind the MM7055's elegant facade lies a muscular, yet refined current-feedback amplifier design that excels at reproducing both fine musical detail and hair-raising transient peaks.  

The MM7055 is comfortable driving high-performance speakers. 

• Power for your system:  The MM7055 power amplifier produces 140 watts of high current output from each of its five channels.
• Massive power supply:  A massive power supply includes a multiple-secondary EI-core transformer and over 65,000 µF of custom-designed energy storage capacity.
• Cool Machine for 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.

Product Highlights

• 5-channel power amplifier
• 140 watts per channel into 8 ohms (20-20,000 Hz) at 0.08% THD, with 2 channels driven
• Frequency response: 8-100,000 Hz (±3 dB)
• Signal-to-noise ratio: 105 dB
• One RCA and one XLR input for each channel
• Discrete Current Feedback circuit for accurate, natural sound at all volume levels
• DC trigger input/output
• IR flasher input
• Massive power supply for high current and low noise
• Gold-plated binding post speaker terminals
• Detachable power cord

Dimensions and Warranty

• 7-3/8"W x 7-1/4"H x 16-1/4"D 
• Weight: 34.6 lbs 
• Warranty: 3 years
• Our 30-day money-back guarantee
• MFR # MM7055