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Marantz MM7055 — Review & Specs | Pricepect | Pricepect

Home Home Audio SystemsMarantz MM7055

Marantz MM7055 — image 1

Marantz

Marantz MM7055

$1,500.00

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MM7055/N1Bmarantz black 3 Year

Home Audio Systems

Expert Review Analysis

The Marantz MM7055 is a 5‑channel Class AB power amplifier delivering 140 W per channel into 8 Ω with low distortion and a high 105 dB signal‑to‑noise ratio, featuring both balanced XLR and unbalanced RCA inputs and a robust power supply for clean, dynamic home‑theater sound.

✓ Best for: Audiophiles and home‑theater enthusiasts who need a dedicated 5‑channel power amp with high current, balanced inputs, low distortion and low standby draw, especially in separates configurations paired with Marantz AV receivers.✗ Not ideal for: Users seeking a compact, lightweight unit, remote‑controlled operation, or guaranteed full‑5‑channel power ratings for high‑output surround installations.

Pros

✓High-current delivery provides dynamic, clean sound across the full audio bandwidth.
✓Reference‑grade capacitors and massive EI transformer give premium build quality and reliability.
✓Both RCA (1.2 V) and XLR (2.4 V) inputs per channel allow versatile balanced and unbalanced connections.

Price History

Current

$1,500.00

Average

$1,439.61

Lowest

$999.00

Highest

$1,500.00

Price trend (90d):0.0%

Best Seller Rank History

Now#1,237Best#248Worst#2,059 +743

Lower = better sales rank

Specifications

Audio

Power Output (8Ω, 2 ch driven)140 W per channel W

Power Output (6Ω, 2 ch driven)170 W per channel W

Maximum Power (6Ω, 1kHz, 2 ch driven)210 W per channel W

Frequency Response8–100 kHz (±3 dB)

Total Harmonic Distortion0.08% %

Design

Colormarantz black

Speaker TerminalsGold-plated screw-type binding posts

Power TransformerLarge-capacity EI transformer

Heat SinkAluminum extrusion

DC TriggerIn/Out

Features

THX CertificationNo

Bridged ModeNot supported

General

BrandMarantz

Model NameMM7055/N1B

Release Date2018-01-01

Warranty3 Year

Weight15200 g g

Power

Power Consumption (Operating)660 W W

Power Consumption (Standby)0.2 W W

Power Supply

EI Power TransformerLarge‑capacity EI transformer for stable high‑current delivery

Thermal

Aluminum Extrusion Heat SinkHeavy‑duty aluminum extrusion dissipates heat efficiently

Control

DC Trigger In/OutAllows amp to be turned on/off via external controller

IR Flasher InputProvides optional infrared remote activation

Dimensions & Weight

Height7.25 inches

Width17.39 Inches

Depth16.25 inches

Weight33.510263824 Pounds

Research Sources

crutchfield.com

audioholics.com

soundandvision.com

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User Reviews

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4.0

(37 reviews)

✓Low standby power consumption of only 0.2 W reduces energy use when the amp is idle.

✓Efficient power supply and massive heat sink keep performance stable under demanding loads.

Cons

✗Power ratings are listed for only two channels driven, so full‑5‑channel performance is not guaranteed.
✗Class AB design causes the unit to run warm during extended high‑power operation.
✗The amplifier does not include a remote control or built‑in multi‑room networking features.
✗No THX certification or bridged mode limits compatibility with some high‑end home‑theater setups.
✗Weight of 34.6 lb and sizable dimensions make placement and transport cumbersome.

From Expert Reviews

Praised by Experts

✓Audioholics praised the simple Class AB linear design delivering solid 140 W per channel.
✓Sound & Vision highlighted the handsome chassis and high‑current output for demanding speakers.
✓Professional reviewers noted the low 105 dB signal‑to‑noise ratio and balanced XLR inputs.

Criticized by Experts

✗Reviewers criticized the lack of all‑channel power specifications, limiting surround‑sound claims.
✗Critiques mentioned the unit runs warm and lacks a remote control for convenient operation.

From User Reviews

Users Love

✓Everyday users report punchy 140 W performance into 6‑8 Ω loads for movies and music.
✓Consumers appreciate the ultra‑low 0.2 W standby draw, keeping electricity costs minimal.
✓Owners find the amp integrates seamlessly with Marantz AV receivers for a clean separates setup.

Users Complain About

✗Users frequently note noticeable heat generation when the amp is used for long periods.
✗Customers complain the power ratings do not cover all five channels simultaneously.
✗The 34.6 lb weight and large footprint make installation in tight AV racks difficult.

Expert Opinion

Professional reviewers commend the MM7055 for its straightforward Class AB architecture, solid 140 W per channel output, premium build quality, and low noise floor, while noting the omission of full‑5‑channel power specs and the lack of remote control as drawbacks.

What Users Say

Everyday owners love the amp’s punchy power, low standby consumption and easy integration with existing Marantz systems, but repeatedly mention heat buildup, the absence of all‑channel power ratings, and the heavy, bulky chassis as pain points.

Common Complaints

Heat buildup during extended use, lack of all‑channel power specifications, and the heavy, bulky chassis are the most common user grievances.

What People Are Saying

“140 Watts per channel... signal to noise 105dB”
Video Review2025-11-01

“pretty cool”
User comment2025-10-15

How It Compares

vs. Emotiva XPA-5

Advantages

✓Higher 200 W per channel provides greater dynamic headroom for demanding speakers

Disadvantages

✗Heavier (~50 lb) and less premium component build than the MM7055

Choose Emotiva for raw power and value; choose Marantz for refined sound and balanced inputs.

vs. Outlaw Audio Model 2200

Advantages

✓Lower price and lighter weight make it easier to install

Disadvantages

✗Only 110 W per channel and fewer input options result in lower performance than the MM7055

Outlaw is suitable for budget‑conscious builds; Marantz is better for audiophile‑grade sound and connectivity.

vs. NAD C 275BEE

Advantages

✓Modular stereo design can be expanded to multi‑channel configurations

Disadvantages

✗Stereo‑focused architecture and lower S/N (100 dB) lag behind the MM7055’s dedicated 5‑channel performance

NAD fits stereo purists; Marantz is the clear choice for a true 5‑channel home‑theater amp.

Rating Trend

Rating4.0/ 5Reviews37+8 reviews -0.40