Marantz MM7055 5-Channel Power Amplifier
The Marantz MM7055 5-Channel power amplifier produces 140 watts of high-current output from each of its five channels. This is “real world” power, too, 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 delivering long-term power to low-impedance speakers.
In practical terms, the Marantz MM7055 is ideal for a “5.1” home theatre system, whether based on a moderately powered receiver or a surround sound processor. 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 theatre systems, the MM7055 pairs with one or more MM7025s to create a fully immersive “7.1” or “9.1” audio experience.
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 ensures astounding accuracy and control under high-drive conditions.
Physically, the Marantz MM7055’s output stages mount on an extruded aluminium “thermal tunnel” for efficient heat dissipation. With temperature-sensing forced-air cooling, this configuration ensures cool operating temperatures for long-term reliability, even when making full use of the amplifier’s substantial output capabilities.
Balanced inputs and single-ended RCA inputs are both supported, and you can choose either input type for each channel individually for easy, flexible connectivity. Audiophile-grade, gold-plated four-way binding post speaker terminals ensure tight connections to your choice of speaker wire.
Specifications of the Marantz MM7055 5-Channel Power Amplifier:
Number of Channels: 5
Transformer: Large Capacity EI
Stereo RCA or XLR (Switchable, independent per channel)
Power Output: 140WPC (both channels, 20-20kHz)
THD: 0.08% Max
Bandwidth: 8Hz-100kHz (±3dB)
Power Output (8 Ohm): 140W (20Hz – 20kHz, 0.08%)
S/N Ratio: 105dB
Freq. Response (Analog In): 8Hz – 100kHz (+/- 3dB)
Dimensions HWD: 7 3/16″ x 17 3/8″ x 15 1/8″
Weight: 16 kgs
Jaisekhara Chandna –
I wanted to upgrade my home theater system and this was the amplifier that I chose. It’s an amazing product with all the bells and whistles you would need. It’s a little pricey but I think it’s totally worth it. I couldn’t be happier.
Viaan Jhaveri –
I’ve been using the Marantz MM7055 5-Channel Power Amplifier for a little while now and it has genuinely upgraded my home theatre. The sound is cleaner, fuller and more controlled especially during action scenes. It delivers plenty of power without ever sounding harsh and it runs cool even during long movie nights. Build quality feels premium and setup was effortless. Overall it’s a reliable and impressive amp that I’m really happy with.
Manju Mishra –
The Marantz MM7055 5-Channel Power Amplifier gives my home theatre a strong, clean power boost that instantly lifts overall sound quality. It runs cool, feels solid and adds clarity and depth to movies and music. A dependable, great-sounding upgrade.