Marantz MM7055 - 5 Channel Power Amplifier with 140W
The MM7055 is a refined amplifier with ample power for the most demanding home theater setups and delivers exceptional musical clarity.
- Classic Design
- 5 Channels
- 140 Watts per Channel
- Class A/B Amplifier
- 3 Year Warranty
Shipping
Most orders ship within 1–3 business days. We deliver across Canada. Large items such as speakers and TVs may require freight shipping — our team will contact you to arrange delivery.
Returns
We accept returns within 30 days of delivery for unused items in original packaging. Contact us at support@HomeAutomationDesigns.com to initiate a return.
Installation Services
Professional installation available in the Ontario GTA & Hamilton area and Edmonton, Alberta. Our certified technicians ensure your system is set up correctly and working perfectly. Contact us to book a consultation.
Audioholics
I do feel that it presents a compelling value to audiophiles who look at more than just rated power when buying an amplifier.
Sound & Vision
The MM7055 offers excellent value for the money.
The Marantz MM7055 is a 5-channel power amplifier built to power a full 5.1 home theater system with the same 140 watts per channel found in the 2-channel MM7025, purpose-made to take over amplification duties from a moderately powered receiver or surround sound processor that's running out of headroom. Its discrete Class A/B design with current feedback topology is backed by a substantial power supply — over 65,000 µF of custom energy storage — giving it the current reserves to drive demanding speaker loads cleanly during dynamic movie soundtracks. Balanced XLR and single-ended RCA inputs are switchable per channel, so it adapts to whatever preamp or processor is feeding it, and gold-plated four-way binding posts keep speaker connections solid. A wide 8Hz-100kHz frequency response and 105dB signal-to-noise ratio deliver exceptional musical clarity across both movies and music. Backed by a 3-year warranty, it's built for anyone whose AV receiver or surround processor needs more clean power across all five channels than its built-in amplification can supply.
Features
| Number of Channels | 5 |
|---|---|
| THX | No |
| DTS | No |
| Dolby | No |
| DSD (SA-CD)/Neural | No |
| SRS | No |
| HDCD Decoder | No |
| Current Feedback Topology | Yes |
| Discrete Amplification | Yes |
| Power Transformer | Large Capacity EI |
| D/A Conversion | No |
| Digital Signal Processing | No |
| Video Off (Pure Direct) | No |
| Source Direct | No |
| Source Direct | Steel |
| Variable X-over | Steel |
| Display Off | Blue LED Illumination off mode available |
| Video Up-conversion | No |
| Auto Calibration by MIC | No |
| Satellite Radio Ready | No |
| AM/FM Tuner | No |
| Bass Redirection | No |
| Lip-sync (digital audio delay) | No |
| Software Upgradable | No |
In Outputs
| HDMI In | No |
|---|---|
| Component In | No |
| S-Video In | No |
| Composite In | No |
| HDMI Out | No |
| Component Out | No |
| S-Video Out | No |
| Composite Out | No |
| Analog L&R In | No |
| Analog L&R Out | No |
| Digital Optical In | No |
| Digital Coaxial In | No |
| Digital Optical Out | No |
| Digital Coaxial Out | No |
| Other | No |
| Pre-Amplifier Out | No |
| Main Amplifier In | Balanced & Unbalanced 5ch (Exclusive use by a selector switch.) |
| Multi-Channel In | No |
| Multi-Room Audio Out | No |
| Multi-Room Video Out | No |
| Multi-Room Speaker Out | No |
| Speaker A/B | No |
| Networking | No |
| External control | No |
| DC Triggers | 1 In / 1 Out |
| D-Bus Remote (RC-5) In/Out | 1 - 1 |
| Flasher In/IR Receiver In/Emitter out | 1/0/0 |
| Front Panel A/V Inputs | No |
| Headphone Out | No |
| AC Outlets (Switched/Unswitched) | No |
Specifications
| Power Output | 140W (20Hz-20kHz, 0.08%) |
|---|---|
| S/N Ratio | 105dB |
| Freq. Response (Analog In) | 8Hz-100kHz (+/- 3dB) |
| Freq. Response (Dig In) | No |
| Frequency Range | No |
| S/N Ratio (Mono/Stereo) | No |
| Frequency Range | No |
| S/N Ratio | No |
| Video Freq. Response (Component) | No |
| Video Freq. Response (Composit, S-Video) | No |
| Signal to Noise | No |
General
| Color | Black |
|---|---|
| Front Panel | Aluminum/Glass-reinforced resin |
| Remote Control | No |
| Power Requirement | No |
| Power Consumption | 660W (Standby 0.2W) |
| Dimensions W x H x D (Inchs) | 17-3/8 x 7-3/16 x 15-1/8 |
| Weight (lbs) | 34.6 |
Q What is the Marantz MM7055 and what is it used for?
It's a 5-channel power amplifier designed for demanding home theater setups and music playback, using discrete Class A/B amplification for exceptional musical clarity.
Q How much power does it deliver?
140W per channel (20Hz-20kHz, 0.08% THD), backed by a large-capacity EI-core transformer with over 65,000 µF of energy storage.
Q What are its audio performance specs?
A signal-to-noise ratio of 105dB and a frequency response of 8Hz-100kHz (±3dB), using current feedback topology.
Q What inputs and connectivity does it offer?
Balanced XLR and unbalanced RCA inputs (selectable per channel), gold-plated four-way binding post speaker terminals, and DC triggers for automation integration.
Q What is its heat management design, and what's the warranty?
Discrete output stages mounted on an aluminum thermal tunnel for heat dissipation, backed by a 3-year warranty.
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