Marantz
Marantz MM7025
Marantz MM7025
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The Power Supply
As befits a Marantz amplifier, the high-capacity power supply begins with an oversized EI-core transformer feeding carefully chosen capacitors capable of storing 30,000 µF of energy. This combination instantaneously delivers peak power to all amplifier stages for distortion-free reproduction of the most complex sources.
Output Devices
In the final amplification stage, specially selected LAPT Hyper-Power output transistors, originally selected for Reference Series use, deliver fortissimo and pianissimo passages with equal aplomb. To make sure they’re always operating at ideal temperatures, these transistors are mounted on a forced-air “thermal tunnel.”
Marantz Sound Quality
The MM7025 advanced technology serves all your listening needs. Current feedback circuits, also used in Marantz Reference Series amps, insure the purest sonic reproduction regardless of source. Another MM7025 virtue, and one directly traceable to its substantial current capability, is the control it establishes over difficult speakers to reproduce both dynamic musical peaks and whispered dialogue without blemish.
Remote Control, Too
You’ll find rear panel connections for a “flasher” input that conveys On/Off commands from an infrared (IR) remote controller. There’s a DC trigger input (and output) that lets you ”daisy chain” one or several MM7025s to turn on and off in synchronization with your preamplifer or surround processor. If you’re going to use the MM7025 with legacy Marantz products, there are RC-5 connectors to give you a level of operating convenience you might not have thought possible.
Features
| Channels | 2 |
| Current Feedback Topology | Yes |
| Phono EQ: Standard / Current Feedback / Constant Current Feedback | No / No / No |
| HDAM version | No |
| Power Transformer: Toroidal / El | No / Yes |
| High Grade Audio Components | Yes |
| Customised Components | Yes |
| Symmetric PCB Layout | No |
| Aluminium extrusion heat sink | Yes |
| Copper Plated Chassis | Yes |
| Tri Tone Control (Bass / Mid / Treble) | No |
| Balance / Bass / Treble / Loudness | No |
Others
| Linear Drive Power Supply | Yes |
| CCNE | No |
| Liniear volume control | No |
| BTL Possibility | No |
| BI-AMP and Multichannel option | No |
| Choke input | No |
| Shottky diodes | No |
| Input buffer amp (all inputs / CD only) | Yes / No |
| Separate Solid Heat Sinks | No |
| System block shielding: Copper / metal / none | No / No / No |
| Double Layer Bottom Plate | No |
| Low noise LCD display | Yes |
| Low noise LED display | No |
| Power Meter : Analog / Digital | No / Yes |
| Source Direct | No |
| Power Amp direct | Yes |
| Standby Mode | Yes |
| 5mm aluminium top plate | No |
Inputs/Outputs
| Audio Inputs | No |
| Phono Input: MM / MC | No |
| Audio Outputs | No |
| Balanced In / Out | 2 / No |
| Pre-out / Main-in | No / 2 |
| Power Amp Direct IN | No |
| Gold Plated Cinch | No |
| Speaker A / B | No |
| Speaker Terminal: Screw / Marantz / WBT | Yes / No / No |
| Number of terminals | 2 |
| D-Bus | Yes |
| Floating Control Bus (3.5 mm mono jack x 2) | No |
| Remote Power Control Trigger - In Out | Yes |
| Flasher In / IR Receiver In | Yes / No |
| Headphone Out | No |
| iPod input (direct / docking station) | No / No |
Specifications
| Power Output (8 / 4 Ohm RMS) | 140 W / 170 W (6) |
| Power Output (8 / 4 Ohm DIN) | No |
| Power Output (8 / 4 Ohm IHF) | No |
| Bridged Power Output (8 Ohm RMS) | No |
| Frequency response | 8 Hz-100 kHz (+-3 dB) |
| Total Harmonic Distortion | 0.03% (20 Hz - 20 kHz) |
| Damping Factor | 100 |
| Input Sensitivity: MM | No |
| Input Sensitivity: MC | No |
| Signal to Noise Ratio: MM/MC | No |
| Input Sensitivity: High level | 1.2 V / 22 K |
| Input Sensitivity: Balanced High level | 2.4 V / 30 K |
| Signal to Noise Ratio: High level | 105 dB |
General
| Available Colors: Gold / Silver / Black / Silver-Gold | No / No / Yes / No |
| Metal Front Panel | Yes |
| Power Consumption in W | 220 |
| Standby Consumption in W | 0.4 |
| Auto Power off | Yes |
| Detachable Power Cable | Yes |
| Remote Control | No |
| System Remote Function | No |
| Maximum Dimensions (W x D x H) in mm | 440 x 126 x 352 |
| Weight in kg | 10.5 |
