Marantz MM7055: Elevating Audio Performance to New Heights


In the world of audio enthusiasts, the search for high-quality sound amplification is a never-ending quest. The right amplifier can bring a new level of clarity, power, and depth to your music or home theater experience. Today, we delve into the realm of premium amplifiers with the Marantz MM7055. This 5-channel amplifier is part of Marantz’s expanded lineup, offering a powerful and versatile solution for audio enthusiasts.

The importance of a reliable and powerful amplifier cannot be overstated. It serves as the backbone of any audio system, ensuring that every note, every beat, and every whisper is faithfully reproduced with precision and accuracy. Whether you’re an avid music lover or a dedicated home theater enthusiast, having an amplifier that can deliver exceptional sound performance is crucial.

The Marantz MM7055 promises to do just that. With its impressive technical specifications and innovative features, this amplifier aims to elevate your audio experience to new heights. From its robust construction to its advanced functionality, this amplifier has been designed with meticulous attention to detail.

In this comprehensive review, we will explore the technical specifications, design and construction, functionality, sound characteristics, sound performance, advantages, value for money, and ultimately draw a conclusion on whether the Marantz MM7055 lives up to its promises. So sit back, relax, and join us on this sonic journey as we uncover the true capabilities of the Marantz MM7055 amplifier.

Technical Specifications

The Marantz MM7055 amplifier is a powerful 5-channel power amplifier designed to deliver exceptional audio performance. With its robust design and advanced technology, this amplifier offers impressive specifications that contribute to its outstanding sound quality.

This amplifier provides a strong RMS power output of 140 watts per channel at 8 ohms, ensuring ample power for driving speakers with ease. The amplifier utilizes a Class AB amplification technology, which combines the efficiency of Class B amplifiers with the low distortion characteristics of Class A amplifiers.

When it comes to sound quality, the Marantz MM7055 boasts a signal-to-noise ratio (SNR) of 105 dB, indicating minimal background noise and clear audio reproduction. Additionally, the total harmonic distortion (THD) is impressively low at 0.03%, guaranteeing accurate and faithful sound reproduction.

In terms of connectivity, the amplifier offers a range of inputs including XLR inputs, allowing for balanced audio connections. This ensures superior audio quality and reduces interference and noise. The amplifier also features trigger outputs for seamless integration with other audio equipment.

The Marantz MM7055 is compatible with various audio formats, making it versatile for different listening preferences. It supports high-definition audio formats such as DTS Master Audio and Dolby TrueHD, guaranteeing immersive and high-fidelity sound reproduction.

With regards to frequency response, this amplifier covers a wide range from 8 Hz to 100 kHz, enabling accurate reproduction of both low and high-frequency sounds. The impedance compatibility ranges from 4 ohms to 8 ohms, ensuring compatibility with a variety of speaker configurations.

Overall, the technical specifications of the Marantz MM7055 demonstrate its capability in delivering powerful and precise audio performance. Its high power output, low distortion levels, extensive connectivity options, and compatibility with various audio formats make it an excellent choice for audiophiles seeking exceptional sound quality.

Design and Construction

The Marantz MM7055 amplifier boasts a sleek and modern design that will seamlessly blend into any audio setup. Its black color adds a touch of elegance, while its compact dimensions of 183mm in height, 440mm in width, and 384mm in depth make it easy to fit into any space.

The construction of the MM7055 is top-notch, utilizing high-quality materials that ensure durability and longevity. The chassis is built with the same technology as the MM8003 model, guaranteeing a sturdy and reliable foundation for optimal performance.

One standout design feature of the MM7055 is its efficient cooling system. The amplifier incorporates advanced cooling mechanisms that prevent overheating during prolonged use. This not only ensures the longevity of the unit but also maintains consistent performance even under demanding conditions.

To further enhance audio quality, the MM7055 is designed to minimize interference. It employs shielding techniques to reduce electromagnetic interference, resulting in cleaner and more accurate sound reproduction.

When it comes to connectors and switches, Marantz has spared no expense in delivering high-quality components. The connectors are solid and well-built, providing a secure and reliable connection for your audio devices. The switches are responsive and have a satisfying tactile feel, allowing for easy operation.

Overall, the design and construction of the Marantz MM7055 amplifier exemplify excellent craftsmanship and attention to detail. From its sleek exterior to its robust internal components, this amplifier is built to impress both aesthetically and functionally.


The Marantz MM7055 amplifier offers a wide range of functionality to cater to various audio sources and preferences. With its versatile connectivity options, it allows seamless integration with different devices such as CD players, computers, smartphones, and more. Whether you want to enjoy your favorite music from a physical disc or stream it wirelessly from your smartphone, this amplifier has got you covered.

In terms of controls, the MM7055 provides a comprehensive set of options to fine-tune your audio experience. It features balance controls that allow you to adjust the audio output between the left and right channels for a perfectly balanced soundstage. Additionally, tone adjustments are available to customize the bass, midrange, and treble frequencies according to your personal preferences.

One notable feature of this amplifier is its operating modes. It offers different modes that cater to various listening scenarios. For instance, it includes a stereo mode that delivers a traditional two-channel audio experience for music enthusiasts seeking pure and immersive sound reproduction. Furthermore, it provides multi-channel modes that optimize the amplifier’s performance when used in conjunction with surround sound systems for an enhanced home theater experience.

The inclusion of XLR audio inputs ensures high-quality signal transmission and minimizes interference for superior audio fidelity. This feature is particularly beneficial for audiophiles who demand the utmost clarity and accuracy in their music playback.

Overall, the functionality offered by the Marantz MM7055 amplifier is extensive and versatile. It provides multiple connectivity options, balance controls, tone adjustments, and various operating modes to cater to different audio sources and preferences. Whether you are a music lover or a movie enthusiast, this amplifier offers the flexibility and control needed to elevate your listening experience to new heights.

Sound Characteristics

The Marantz MM7055 amplifier delivers exceptional sound characteristics that will elevate your audio experience to new heights. With its powerful performance and precise audio reproduction, this amplifier truly stands out in terms of sound quality.

One of the standout features of the MM7055 is its ability to provide incredible details in the sound. Whether you’re listening to a delicate acoustic guitar or a complex orchestral arrangement, this amplifier ensures that every nuance and subtlety is faithfully reproduced. The instrument separation is remarkable, allowing each instrument to have its own space in the soundstage, creating a realistic and immersive listening experience.

The bass response of the MM7055 is deep, tight, and controlled. It adds a solid foundation to the overall sound presentation, without overpowering or muddying the other frequencies. The amplifier handles low frequencies with precision, delivering impactful bass that brings energy and excitement to your music.

In terms of treble clarity, the MM7055 excels in reproducing high frequencies with utmost accuracy and transparency. The highs are crisp, detailed, and well-extended, adding sparkle and airiness to the overall sound. This clarity ensures that every cymbal crash, violin string, or vocal sibilance is rendered with precision and realism.

When it comes to different music genres, the MM7055 adapts effortlessly. Whether you’re listening to classical music, rock, jazz, or electronic music, this amplifier brings out the best in each genre. It maintains a neutral and balanced sound signature, allowing you to enjoy the music as it was intended by the artists.

Overall, the sound characteristics of the Marantz MM7055 are nothing short of impressive. Its ability to reproduce details, provide excellent instrument separation, deliver impactful bass response, and maintain treble clarity makes it a top choice for audiophiles and music enthusiasts alike. No matter what genre of music you prefer, this amplifier will elevate your listening experience to a whole new level.

Sound Performance

The Marantz MM7055 amplifier delivers an exceptional sound performance that will transport you into a world of audio bliss. With its powerful 5-channel design and advanced technology, this amplifier ensures a faithful reproduction of audio signals, allowing you to experience music and movies with utmost clarity and precision.

One of the standout features of the MM7055 is its ability to maintain a perfect balance between different frequency ranges. Whether you’re listening to delicate high-frequency details or enjoying the deep rumble of bass, this amplifier handles it all with finesse. The tonal balance is spot-on, ensuring that no frequency overpowers another, resulting in a cohesive and immersive listening experience.

When it comes to clarity, the MM7055 truly shines. It effortlessly brings out the intricate nuances in every piece of music or dialogue, allowing you to hear even the subtlest details that may have gone unnoticed before. The soundstage created by this amplifier is expansive, providing a sense of depth and dimensionality to your audio.

Dynamics are another area where the MM7055 excels. It has an impressive ability to handle sudden changes in volume levels, capturing the full impact of explosive movie scenes or the crescendos in music performances. The amplifier’s quick response ensures that no detail is lost during these dynamic moments, delivering a thrilling and engaging audio experience.

Whether you’re using the MM7055 for stereo music playback or as part of a home theater setup, it consistently delivers exceptional sound quality. It elevates your audio experience to new heights, allowing you to fully immerse yourself in your favorite content.

In conclusion, the sound performance of the Marantz MM7055 is truly remarkable. It faithfully reproduces audio signals with clarity, precision, and an impeccable tonal balance. Its ability to handle dynamics and create an expansive soundstage further enhances the overall listening experience. If you’re looking for an amplifier that will bring your audio to life, the MM7055 is an excellent choice.


The Marantz MM7055 amplifier offers several advantages that set it apart from its competitors in the market. Firstly, its 5-channel configuration provides a versatile and immersive audio experience, allowing users to enjoy multi-channel audio formats such as DTS Master Audio and Dolby TrueHD with exceptional clarity and precision.

One of the standout features of the MM7055 is its robust power output. With a strong RMS power of 140W per channel at 8 ohms, this amplifier delivers impressive performance, ensuring that every note and sound is reproduced with accuracy and detail. The use of the same chassis technology as the highly acclaimed MM8003 model further enhances its power capabilities.

Additionally, the MM7055 incorporates advanced feedback current technology with an ultra-wide bandwidth, enabling it to effortlessly handle high-frequency signals found in SACD formats. This results in a well-balanced soundstage and image, characterized by speed and dynamic range.

In terms of design and construction, the MM7055 boasts a sleek and stylish appearance with a black finish that complements any home audio setup. Its solid build quality ensures durability and longevity, providing users with a reliable amplifier that will stand the test of time.

When compared to other amplifiers in its price range, the Marantz MM7055 stands out for its exceptional value for money. With its powerful performance, advanced features, and reliable construction, it offers a compelling option for audiophiles seeking high-quality sound reproduction without breaking the bank.

Overall, the Marantz MM7055 amplifier excels in delivering impressive power output, advanced technology, and excellent value for money. Its ability to handle multi-channel audio formats with precision makes it a top choice for both music enthusiasts and home theater aficionados alike.

Value for Money

The Marantz MM7055 amplifier offers excellent value for money with its impressive performance, extensive features, and reasonable price. When considering the performance aspect, this amplifier delivers a powerful output of 140 watts per channel at 8 ohms, ensuring a high-quality audio experience. The use of advanced technology, similar to that found in the MM8003 model, guarantees a clear balance of sound and image, along with speed and dynamism.

In terms of features, the MM7055 amplifier provides various inputs including XLR audio inputs, constant current triggers, and a Marantz control bus for remote control capabilities. These features enhance convenience and ease of use, allowing users to integrate the amplifier seamlessly into their audio setup. Additionally, the amplifier features a stylish display that shows the actual output power.

Considering the price point of the Marantz MM7055 amplifier, it offers great value compared to other amplifiers in its class. With its robust construction and reliable performance, this amplifier provides an affordable option for audiophiles and home theater enthusiasts seeking high-quality sound reproduction.

Overall, the Marantz MM7055 amplifier delivers exceptional value for money by providing outstanding performance, a range of useful features, and an affordable price tag. Whether you are looking to enhance your home audio system or create a captivating home theater experience, this amplifier is a worthwhile investment that will not disappoint.


In conclusion, the Marantz MM7055 amplifier is an impressive addition to the brand’s lineup of high-quality amplifiers. With its 5-channel configuration and powerful performance, it delivers a clear and balanced sound experience.

The technical specifications of the MM7055 are noteworthy. With a power consumption of 440W and a signal-to-noise ratio of 105dB, it provides a reliable and efficient performance. The amplifier’s compact design and sleek black color make it a stylish addition to any audio setup.

Functionally, the MM7055 offers a range of features that enhance its usability. The inclusion of XLR audio inputs, constant current triggers, and the Marantz control bus system allows for seamless integration with other audio components. Additionally, the new stylish display provides real-time output power information.

The sound characteristics of the MM7055 are exceptional. With a frequency range from 8Hz to 100kHz and a low distortion rate of 0.03%, it reproduces audio with precision and clarity. The amplifier’s ability to handle high-resolution formats such as DTS Master Audio and Dolby TrueHD further enhances its versatility.

In terms of sound performance, the MM7055 delivers an immersive listening experience. Its strong RMS power output of 140W at 8 ohms per channel ensures ample volume and dynamic range for both music and movies. The amplifier’s ability to maintain a clear balance between sound and image adds depth and realism to audio playback.

One of the key advantages of the MM7055 is its value for money. While it may be considered a higher-end amplifier, its performance justifies the investment. The build quality, features, and audio performance make it an excellent choice for audiophiles and home theater enthusiasts who seek uncompromising sound quality.

For potential buyers, it is important to consider their specific needs and requirements. If you are looking for a powerful amplifier that can handle multiple channels and deliver exceptional sound quality, the MM7055 is a solid choice. However, if you require additional features such as Wi-Fi or Bluetooth connectivity, you may need to explore other options.

Overall, the Marantz MM7055 amplifier is a top-notch audio component that offers impressive performance and versatility. Its strong build quality, advanced features, and exceptional sound characteristics make it a worthwhile investment for those seeking a high-quality amplifier for their audio setup.

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