The MM7025 Stereo Power Amplifier from Marantz is designed to deliver powerful stereo sound. This amplifier features a discrete amplification design for robust sonic delivery. Each channel in the amplifier delivers up to 140W of power at 8 ohms and 170W at 6 ohms. It is also equipped with balanced and unbalanced input options, allowing you to connect a wide variety of pre-amplifiers and processors. This amplifier is suitable for use in dedicated 2-channel audio systems or as an addition to multi-channel surround systems.

Open Box Products Have a Limited 3-Year Manufacturer Warranty    Up to 140W Per Channel at 8 Ohms    Current Feedback Discrete Power Amp    Balanced and Unbalanced Inputs    Large Power Transformer

This model is equipped with a current feedback amplifier section that uses the same push-pull circuit found in Marantz's SM-11S1 Hi-Fi power amplifier. This amp is designed to provide increased operating stability, and high-speed, wide-ranging, high-density playback. The current/voltage conversion amplification section in the latter part of the power amp is equipped with a Wilson current mirror circuit that amplifies to the high sound range with low distortion.

The final stage of the power amp is equipped with the same LAPT (high-efficiency power transistor) that is installed in the SM-11S1 Marantz Hi-Fi power amp, providing improved instant power supply capability. The power section is equipped with a large-sized transformer. As one of the essential parts of the power section, this unit is equipped with a notable Marantz 15,000 μF / 71 V×2 block condenser. These improvements to the power supply are engineered to provide a powerful and presence-filled sound.

This amplifier is equipped with a chimney-shaped heat sink to efficiently process the heat emitted from each channel along with quiet cooling fans. A high-sensitivity temperature sensor IC is used to control the cooling fans, adjusting the rotation speed to match the amount of heat generated by the amp.

For installation flexibility and maximum compatibility, each channel on this amplifier is equipped with balanced and unbalanced inputs.

This amplifier has an IR flash input that supports custom installations and DC trigger input and output terminals.

When a Marantz AV pre-amplifier/process such as the AV8003 or AV7005 is connected to this unit, this amplifier's power can be switched On/Off together with the pre-amplifier's power supply. This connection is designed to reduce sonic interface as much as possible.

• Marantz reference-grade filter capacitors and high-speed output transistors
• Gold-plated, high-grade loudspeaker terminals
• Flasher input, DC trigger input/output, and RC-5 remote control connectivity
• Detachable power cord (IEC320 2-pin type)
• Porthole display with blue illumination accent
• High instantaneous peak current design
• Low impedance continuous drive capability

Related Questions and Answers

Q: 1. Can I hook an equalizer to the Marantz power amplifier?

A: Unfortunately newer Amplifiers (and Receiver Amplifiers) no longer offer the ability to connect a separate Equalizer like the older models. The current models no longer provide Input / Output ports for Equalizers.

Q: 2. How loud do the fans get, do you hear them?

A: The Yamaha PX8 is made primarily for live sound reinforcement. In that environment, you would not hear the cooling fans in the PX8 amplifier.

Q: 3. Is the subwoofer output for use with powered or passive subs?

A: The subwoofer output is intended for a self-powered subwoofer.

Q: 4. Does it have fans to keep it cool?

A: Yes the Yamaha PX8 amplifier has cooling fans.

Q: 5. Can I hook an equalizer to this Marantz stereo power amplifier?

A: Unfortunately newer Amplifiers (and Receiver Amplifiers) no longer offer the ability to connect a separate Equalizer like the older models. The current models no longer provide Input / Output ports for Equalizers.

Q: 6. Speakers ratings, should I take minimum or peak as reference to match my speakers to an amplifier?

A: You should take both ratings into consideration if they are provided. RMS power ratings provide a better idea of the continuous power that is provided by an amplifier or when an RMS rating is listed for a speaker, it is the amount of continuous power that a speaker can handle. Peak power ratings refer to occasional short bursts of power that an amp can provide or the amount of power in a short burst that a speaker can handle. When only peak power ratings are provided, you can determine the RMS power rating by multiplying peak power x 0.7071. For example, if an amplifier is rated at 800 watts peak power, multiply 800 x 0.7071 which equals 565.68, meaning the amp's RMS power is approximately 566 watts.

Q: 7. Can we use PX3 pro amp for hometheater setup and home or this is for commercial purpose like events and functions .. thanks

A: This is generally used for either amplifying PA speakers or for commercial use. Usually home entertainment speakers require an amplifier that pushes a different impedance. This amp does 300w at 8ohms per channel and 500w at 4ohms per channel. Most home entertainment speakers run at 6ohms and are generally a lower wattage.

Q: 8. What is the factory warranty for the PX8?

A: The Yamaha PX8 Stereo Power Amplifier has a three year limited warranty.

Q: 9. Does the Marantz power amplifier sounds like an amplifier with an equalizer?

A: The Marantz MM7025 provides power only, and would be paired with a preamplifier, which would have inputs for your components and equalization adjustments. The Marantz AV7706 11.2-Channel Network Preamplifier with HEOS, BH #MAAV7706 is an example of a preamp that would work well with this power amplifier.

Q: 10. if this amp is connected to a stereo receiver, do the speakers connect to the amp or receiver?

A: The speakers will connect to the amp as the amp is what is providing the power to the passive speakers