Marantz MM7025 Two-Channel Power Amplifier

Pure Power, No Compromises

The Marantz MM7025 does one job and does it thoroughly: amplify a stereo signal with as little coloration as possible. A current feedback discrete power amp circuit, the same push-pull topology found in Marantz's higher-end SM-11S1, delivers 140 watts per channel into 8 ohms and 170 watts into 6 ohms, with peaks reaching 210 watts. A large power transformer keeps that output stable even when the music gets demanding.

Both balanced XLR and unbalanced RCA inputs accept a signal from your preamp or processor, so the MM7025 slots into a two-channel system or a home theater's front channels with equal ease. Damping factor of 100 and a signal-to-noise ratio of 105dB keep the amplifier's own footprint out of the way of the music, and frequency response extends from 8Hz to 100kHz, well beyond what's audible, for headroom in both directions.

Binding posts on the rear accept standard or banana-terminated speaker cable, and both RCA and mono XLR outputs let the MM7025 pass a signal along to another amplifier if you're bi-amping or building out a larger system.

Built for the Long Haul

At just under 24 pounds and a standard component width, the MM7025 fits into any rack without demanding special accommodation. An IR input, 12-volt trigger input and output, and RC-5 remote compatibility let it integrate into an automated or custom-install system, powering on and off with the rest of your gear. Marantz backs it with a 3-year limited warranty.

What Reviewers Are Saying

Scott Robb, in a February 19, 2025 review, called the MM7025 "without a doubt, THE BEST power amplifier I have ever owned." He described hearing details in familiar recordings for the first time, including finger snaps he'd "NEVER heard before," and praised its soundstage, writing that with the MM7025 in his system, "I feel like I am ON the stage with the band/orchestra arranged directly in front of me."

Who Is This Power Amplifier Best For?

• You already have a preamp or processor you love — the MM7025 adds pure power without replacing what you have.
• You want serious headroom for demanding speakers — 140 watts per channel at 8 ohms, with peaks to 210 watts.
• You're building or upgrading a two-channel system — balanced XLR and unbalanced RCA inputs cover either setup.
• You want your system to power up together — 12-volt trigger and RC-5 remote support integrate with the rest of your gear.
• If you need more than two channels for a home theater, Marantz's own MM7055 extends the same amplification to five channels.

How Does It Connect to Your System?

Connect the balanced XLR or unbalanced RCA output from your preamp or AV processor to the MM7025's inputs, and your speakers to the binding posts. If you're bi-amping or adding a second amplifier down the line, the RCA or XLR outputs pass the signal along. A 12-volt trigger ties power-up to the rest of your system.

From there, the MM7025 simply gets out of the way and lets your preamp and speakers do the talking.

Pairs Well With

Building around the MM7025? Here are some great companions:

• Preamplifier: Marantz's own PM6007 or a dedicated preamp feeds the MM7025 a clean signal.
• Speakers: 140 watts per channel drives a serious pair — see our Floorstanding Speakers.
• Cables: Quality XLR interconnects carry the balanced signal — see our Interconnect Cables.
• Audio Rack: A sturdy home for a dedicated power amp — see our Audio Racks.

Frequently Asked Questions

How much power does it deliver?

140 watts per channel into 8 ohms, or 170 watts per channel into 6 ohms, with peaks to 210 watts.

Does it have a volume control or inputs for multiple sources?

No. It's a dedicated power amplifier meant to pair with a separate preamp or AV processor.

Does it accept balanced connections?

Yes, both balanced XLR and unbalanced RCA inputs are included.

Can I use it for bi-amping?

Yes, RCA and mono XLR outputs let you pass the signal to a second amplifier.

Does it support custom-install automation?

Yes, with a 12-volt trigger input and output, IR input, and RC-5 remote compatibility.

What warranty does it carry?

Marantz covers the MM7025 with a 3-year limited warranty.

See It in Action

hooded dragons shares a real-world overview after ten months with the MM7025:

Current Overviews walks through the MM7025's features:

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Learn More

Want to learn more about power amplifiers, bi-amping, or building a two-channel system? Visit our Learning Center for guides, tips, and expert advice.