Marantz MM8077 vs MM7055 Review

If you need a product that delivers excellent sound quality, an amplifier may be for you. Amplifiers are great for watching movies, listening to music, or any audio source you would like to enhance. Marantz makes two very similar amplifiers that come with a few key differences you should be aware of if deciding between the two products. Let’s take a look at both, and see which would be the best fit for your needs!

Marantz MM8077 Amplifier

Marantz MM8077
Marantz MM8077

The Marantz MM8077 amplifier is a high-resolution audio enhancer that comes with 7 separate channels. These channels come with power transistors and acurrent feedback output stage, which helps this product deliver quality sound no matter what the input audio device is. You can also configure each channel according to your sound preferences, by choosing between unbalanced and balanced inputs.

This amplifier comes with easy installation, allowing you to simply power the device on and plug in your audio source. The Marantz MM8077’s current feedback output stage is discreet, and designed to have a high slew rate. This means that the bandwidth is very wide, so this product can handle all sorts of high resolution audio.

This product features a toroidal power transformer for lasting battery supply. Along with this, the Marantz MM8077 can work easily with lower impedance tasks that are often difficult for amplifiers. This is accompanied by a rating of 150 watts per each of the 7 channels. This allows the Marantz MM8077 to handle many different speaker setups with ease.

This product also comes with a standby mode that automatically shuts off to conserve energy. The Marantz MM8077 is also designed with a copper plated chassis, which reduces external interference and protects the components. This product comes with active and passive cooling, through a nearly silent fan and ribbed fins.

More features of the Marantz MM8077 Amplifier

  • 7 channels
  • 150 watts delivered per channel
  • Weighs 39.7 pounds
  • 16 x 17.3 x 7.4 inches

Marantz MM7055 Amplifier

Marantz MM7055
Marantz MM7055

The Marantz MM7055 amplifier is very similar to the previous amplifier, in that this one also comes with aneasy installation. You simply power on the device and plug in your audio source to start enjoying the Marantz MM7055.

Unlike the previous product, the Marantz MM7055 has 5 channels, with 140 watts per each one. This product also incorporates post terminals that are gold-plated, with binding that works 4 ways. By doing this, Marantz ensures that the Marantz MM7055 will deliver quality and durability at the same time.

This product also comes with a dedicated cooling unit, which works quietly and keeps your amplifier cool during heavy loads. This product allows you to customize your music sound, by choosing between balanced and unbalanced inputs. You can adjust these configurations at any time. This product also comes with a steel chassis, that helps prevent external interference, providing you with quality sound and reliability.

This product uses an EL Core transformer, which helps the Marantz MM7055 work easily through difficult loads. This is accompanied by a faceplate designed for durability and style, along with a non-resonant resin and aluminum composite.

More features of the Marantz MM7055 Amplifier

  • 5 channels
  • 140 watts delivered per channel
  • Weighs 33.5 pounds
  • 16.2 x 17.4 x 7.2 inches


An amplifier is an excellent addition to any at-home theater setup, or an existing stereo system, that needs to deliver higher quality. If you need a product that offers 7 channels, with a current feedback output stage, as well as a standby mode, toroidal power transformer, and active and passive cooling, then the Marantz MM8077 may be the best fit for your amplifier needs. Conversely, if you need a product that can deliver 5 channels, has a dedicated cooling unit, EL Core transformer, and a smaller size, then the Marantz MM7055 may be the best amplifier for you. Both of these products deliver customization per each channel, as well as durability and style. All this combined makes either product an excellent option to meet your amplifier needs!

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