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Marantz MM7025

Stereo power amplifier

12 Reviews | 6 questions - 19 answers

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Our take on the Marantz MM7025

Connect this 2 x 140-watt beast to the preamp outputs of a receiver or a wireless music player such as the the Sonos ZP90. Add a pair of speakers that can handle the high power, and get ready for a breathtaking sonic thrill ride.

Massive power for a wide range of audio applications

Connect this 2 x 140-watt beast to the preamp outputs of a receiver or a wireless music player such as the the Sonos ZP90. Add a pair of speakers that can handle the high power, and get ready for a breathtaking sonic thrill ride.

Use the MM7025 in your main listening room to drive your primary speakers. Expect to hear tighter, weightier bass, and wider dynamic swings that bring you closer to the sound of live music. (If your speakers can be biamped, this Marantz makes a superb choice for driving the low-frequency half of your system.)

Audiophiles using a preamp or A/V processor with XLR outputs can connect to this amp's XLR inputs and take advantage of the superior sound quality they provide. You could also use this amp to power a second zone. If you're using a speaker selector to divide the second-zone power among multiple rooms, don't worry. There's plenty of juice here to go around.

The MM7025's current-feedback amplifier design provides for nuanced reproduction of fine musical detail and plenty of sonic muscle to support chest-thumping transient peaks. HDAM-SA3 circuits provide high-speed signal response for precise sound.

I really I really like this amp. It's preamp from a Marantz 1607 going to totem dream catchers. The sound is warm but clear. I a/b this with emotiva xpa. The latter was very bright and painful despite tone changes. This is a good piece of equipment.

numan, Albany, NY

What's in the Box:

  • 2-Channel power amplifier
  • 68" AC power cord
  • 44" Remote control cable (single RCA on both ends)
  • User guide (English/ French/ Spanish)
  • USA Warranty information
  • Canadian Warranty information

Product Highlights:

  • 2-channel power amplifier
  • 140 watts x 2 into 8 ohms (20-20 kHz at 0.08% THD); 170 watts x 2 into 6 ohms
  • frequency response: 8-100,000 Hz (±3 dB)
  • signal-to-noise ratio: 105 dB
  • Discrete Current Feedback circuit for accurate, natural sound at all volume levels
  • oversized power transformer for high current levels
  • one RCA and one XLR input for each channel
  • DC trigger input/output
  • IR flasher input
  • gold-plated binding post speaker terminals
  • detachable power cord
  • 17-3/8"W x 5"H x 15"D
  • weight: 23.8 lbs.
  • warranty: 3 years
  • Our 60-day money-back guarantee

Marantz MM7025

Average Customer Review(s):

(12 Reviews)

Strong work Marantz

numan from Albany, NY on 9/21/2016

Crutchfield Customer Review (What's this?)

I really I really like this amp. It's preamp from a Marantz 1607 going to totem dream catchers. The sound is warm but clear. I a/b this with emotiva xpa. The latter was very bright and painful despite tone changes. This is a good piece of equipment.



Very Happy

Mike from Grand Rapids, MI on 5/16/2016

Crutchfield Customer Review (What's this?)

Very happy with MM7025 purchase. Connected from Nad T748 pre out to Polk TSx440t Fronts, in 5.1 system for movies, and alone in Stereo for music. I had recently read a comment, in the Q&A section, on a website of a speaker manufacture. The customer was asking if his receiver was a good match for the speakers he was looking to buy, (note they were not talking about this equipment). The reply was that his receiver would, "Open them up nicely". The MM7025 did just that to my front speakers. Wish I had done this upgrade long ago.

Pros: More than enough power for my speakers, quiet, and looks nice with other equipment.

Cons: None

Marantz mm7025

Armando from miami, FL on 1/25/2016

Crutchfield Customer Review (What's this?)

Marantz have always been a great name in the audio industry, This amp is no exception, for the price you are getting a bargain, good amps are always over 2,500 $ , I have paired it to a denon avr-x7200wa and that 11th channel comes to life with this amp,

Pros: Good price for the quality you get,

Cons: have not found one yet


Gary from Texas on 1/1/2016

Crutchfield Customer Review (What's this?)

I have only had this amp for a few days, it matches the rest of my new Marantz components perfectly, and I may never know the full extent of the massive power this bad boy puts out. But its good to have.

Pros: Its all good!

Cons: None

MM7025 - a good 2 channel PA for the price

ah_sd from San Diego, CA on 4/21/2015

Crutchfield Customer Review (What's this?)

I use this with a vintage Marantz Model 3200 preamplifier to drive my series VI 901s. The 901s need a lot of drive and the 7025 does the job flawlessly, has the clean power and is rather transparent, also capable of producing a lot of clean bass with the 901s which is not easy. I have had the 7025 for 2 weeks now and would recommend it for this power and price range / fair sound quality.

Pros: Performs as expected, drives power hungry speakers well, looks great and seems to be well built

Cons: none so far

Marantz MM 7025

Mike K. from Tulsa, OK on 3/3/2015

Crutchfield Customer Review (What's this?)

I'm driving this with the pre-out of a 1974 Marantz 2270, which I completely recapped in 2013. On the business end of the 7025 is a pair of Bose 901 Type II's. Other gear in the system is a Thorens TD125 MK II turntable, and a Revox A77 reel-to-reel tape deck. This amp is performing as expected by the other great reviews I read.

Pros: Easy set up, basically works right out of the box.

Cons: None.


Geekmo from Kennewick, WA on 6/29/2014

Crutchfield Customer Review (What's this?)

I purchased a pair of these for a project i am doing, but in the mean time i am using them to bi-amp a pair of Martin Logan SL3s. They have a great sound and are easily running the power hungry electrostats, though I am not pushing them hard as the speakers can drop impedence loads when pushed. The soundstage has been great paired with this amplifier. The only reason i give four stars is that one arrived D.O.A. One call to Crutchfield and the exchange process was underway. Excellent service. I had a return label within moments and shipped back the bad amp that very day. Very simple operation when triggered from my receiver. Auto shut off features work splendidly. So far so good.

Pros: Marantz sound, powerful and rich. Balanced and unbalanced inputs available for flexibility of connections. Matches my existing Marantz receiver with the porthole design.

Cons: Not stated as 2 ohm stable. Of 2 ordered one was doa.

Good Sound & Good Looks!

jd from SW Missouri on 2/4/2014

Crutchfield Customer Review (What's this?)

I have been using this amp with a Marantz NR1602 receiver to drive my Bose 901 VI loudspeakers. It does this quite well. Previously, I used an Adcom GFA5500, which is a much heavier amp, rated 200W per channel into 8 Ohms and 350W / channel into 4 Ohms compared to the Marantz's 140/170 Watt ratings. Despite the power deficit, the Marantz sounds real nice with the 901's and seems to be stout enough for them. Admittedly, the 901's, even considering their EQ, are an easy load as they are fairly sensitive and present a uniformly comfortable impedance. The MM7025 is very quiet in operation. It has a cooling fan but I have yet to hear it come on. I hear no noise at all with this amp. Music, TV and movies just sound natural with the MM7025. It's pretty much a case of what goes in is what comes out. It seems to add no color or character of it's own. In my mind, that is exactly what an audio amplifier should do. The only thing that I've found so far to give Marantz a slight demerit for is the auto-off circuit. It works fine to automatically power down the amp after a pre-set inactive period, but it's not so good at turning it back on! I have to cycle the receiver's power off, then back on, to wake up the MM7025. No biggie, I just use my receivers sleep function. When it sleeps, so does the amp. Then when I turn the receiver on, the remote connection wakes the amp.

Pros: Beautiful looks! (If you appreciate such things!) Quiet operation Neutral sound Manageable size Fair price Good power

Cons: Not rated for 4 Ohm loads Auto power off circuit could be improved by including a signal-sensing function.

Marantz MM7025

Anonymous from Akron, Ohio on 12/27/2013

Crutchfield Customer Review (What's this?)

I got this to use for the left & right main channels of my Marantz SR7005 receiver. I'm very happy with the results. I think the MM7025 does a better job driving the B&W 604 speakers. The remote control connection to the reciever is nice. The amp starts up a few seconds after the receiver is turned on.

Pros: Nice sounding amp.

Cons: None

Great Amplifier

TeddD from Elkhorn, Ne on 8/16/2013

Crutchfield Customer Review (What's this?)

Using Arcam DAC into Marantz AV7005 to the MM7025, which is then driving B&W PM1s. Replaced a Yamaha receiver with about the same power. The difference is stunning, even the wife, who never listens was immediately captivated. Depth, clarity, power all great. No hard edges to the sound like some other amps I looked at. Really woke up the PM1s.

Pros: Depth, clarity big improvement. Looks match the AV7005 and are nice. Used banana plugs for out and XLR balanced connections for in, which worked great.

Cons: Nothing really.

Great Marantz 2 channel MM7025!

B. Vincent from New York, NY on 5/22/2013

Crutchfield Customer Review (What's this?)

Great sound for 2 channels. Has power and impact to spare. Once it was connected, not easy with only bare wires, worked like a champ! A high end value!

Pros: Great sound. Very nice looks.

Cons: Limited connectivity. Ruins wire with spade ends.


Tom from Catlettsburg, KY on 10/13/2012

Crutchfield Customer Review (What's this?)

Excellent. Paired with a Peachtree Audio Nova Pre and pushing B&W 683s. Large presence at low volumes. HUGE presence as volume increases. Dead quiet to control chaos depending on the track. Using computer USB, Digital coaxial from CD player and Optical from an Apple Airport Express to stream. Would be the same combo again.




Hands-on research

Product Research


Current Feedback: The MM7025 is equipped with a current feedback circuit and uses the same complimentary push-pull circuit as the far more expensive SM-11S1 power amp, providing minimal phase shift and excellent detail resolution. The current/voltage conversion section has a Wilson current mirror circuit to improve circuit stability and high-speed processing.

Instant Power Supply: The final stage of the power amp uses the same LAPT (high efficiency power transistor) as the SM-11S1, offering instant power supply capability. The power section has a large transformer and Marantz original 15,000 μF / 71 V x 2 block condensers to provide a powerful, presence filled sound.

Heat Dissipation: The chimney-shaped heat sink efficiently processes the heat emitted from each side of the amp and a quiet cooling fan removes the heat from the chassis. A high-sensitivity temperature sensor IC is used to control the cooling fan's rotation speed to match the amount of heat generated by the amp.

Auto Standby: With the Auto Standby Mode is turned on this unit will enter standby mode after approximately 30 minutes (continuous) with no input signal.

Speaker Outputs: The speaker output terminals are binding posts; they are not 5-way posts, but will accept single banana plugs, pin connectors, and bare wire. A plastic collar prevents their use with spade lugs and they're too far apart for dual banana plugs.

Inputs: There are RCA (unbalanced) and XLR (balanced) inputs. Separate switches for the left and right channels specify which is engaged; useful if you're not using the MM7025 as a stereo amp.

Display: A blue indicator on the front panel display and a blue ring around the display light when the power is on; the blue ring around the display can be turned off if you prefer. Separate red indicators on the display light when the protection circuit or Auto Standby feature is engaged.

Remote Power Control: This unit is equipped with a remote power control function; when a compatible Marantz preamp is connected, this unit's power can be switched on and off simultaneously with the preamp. The RCA Remote Control input is connected to the preamp and the Remote Control output can be connected to other compatible Marantz components; CD player, DVD player, Tuner, etc.

Flasher Input: The IR flasher input is useful with universal remote controls; power and mute remote codes are available for the MM7025.

DC Control: The 3.5mm mini-jack input allows the MM7025's power to be controlled by another device (5-15 V). The DC Control output allows the MM7025 to control the power of another compatible device (12 V/44 mA).


  • Amplifier Type: Class AB
  • Power: (20 Hz-20 kHz, 0.08% THD, both channels driven)
    • 8 Ω: 140 watts x 2
    • 6 Ω: 170 watts x 2
  • Input Sensitivity:
    • RCA: 1.2 V/22 kΩ
    • XLR: 2.4 V/30 kΩ
  • Signal to Noise Ratio: 105 dB
  • Power Consumption: 330 watts
  • Standby Power: 0.2 watts
  • Weight: 23.8 pounds

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Wanted to add additional Marantz amplification for existing 9.2 receiver to upgrade to 11.2 [ mwbdcrown  Aug 22, 2016 ]
Dexter recommended this as a good pair to my Denon AVR-X7200WA for the 2ch external powered amp needed for 11.1 surround. The power match-up seemed appropriate, and Marantz is another brand for quality. Dexter's Bio: [ Charles  Aug 16, 2016 ]
After researching reviews, testimonials, and listening for myself, I felt this would give me the best bang for my bucks [ Michael  May 24, 2016 ]
Feedback [ Peter  Apr 06, 2016 ]
POWER!! [ Gary  Dec 19, 2015 ]

6 questions already asked

Yes you it can send mono to each front tower speaker as long as the input device hooked up to the amp is sending mono to both speakers. Basically it is a pass-thru from input device to speaker so whatever signal is sent to the right speaker is what is amplified to the right speaker. Whatever signal is sent to the left speaker is what is amplified to the left speaker. The only change to the signals sent is that they are amplified, (made louder), so that the input device doesn't have to have its own amplifiers for each channel. Hope that this answers the question to your satisfaction, and helps. ;o) [ Charles  Oct 13, 2016 ]
I'm not quite sure what you mean. If you want to only connect one speaker to the amp, vice two, then yes is the answer. An amp is a pretty dump device. It merely amplifies the sound, and maybe cleans up the sinewave of the output from your receiver or preamp device. I have a preamp and eight speakers (no center channel). I use the 7025 for my front left and right. Then another 7 channel amp for the other six surround speakers. [ Todd  Oct 13, 2016 ]
Yes [ Nancy  Oct 13, 2016 ]
Yes you can. I would check your speaker power maxium as you dont want to overpower them and risk damage. Your tuner/reciever will need to have enough pre out terminals to send signal to two amps. [ Lynn  Oct 13, 2016 ]
I have components (DVD player, satellite radio and am old cassette tape player) hooked into an NAD pre-amp/tuner powered by the Marantz. Does your receiver have an integral amplifier? if so that may be a problem. If the receiver puts out an un-amplified signal I would think it would [ Patricia  Aug 05, 2016 ]
This is a question for the experts at Crutchfield. As per the "about tech" Website, "...the R-S700 (includes a) multizone/multi-source feature, which allows a listener in Zone 2 to hear a different source than the main room. The receiver's non-powered Zone 2 output requires an amp and two speakers in the second zone. It comes with a separate Zone 2 remote control to operate the receiver from another room. Note: Multizone operation requires running speaker wires and IR (infrared remote) control wires from Zone 1 to Zone 2, which may require professional installation." The Marantz MM7025 will provide very good to excellent power amplification for zone two. Although it has a remote control connection via an RCA plug cable, the Yamaha uses IR. Given this, the remote operation may not work. Bill M. [ WILLIAM R  Aug 04, 2016 ]
That all depends. Please follow the link above, and see if this will help answer your question. The MM7025 is a two channel amp. The Yamaha R-S700 appears to be a 2 or 4 channel receiver, depending on whether your speakers are 4, 6 or 8 ohms rated. I'm not quite sure that you will gain much with the addition of the MM7025, if all you are using only 2 channels. Best to check the web site at audioholics(dot)com for best practices. [ Todd  Aug 03, 2016 ]
If your amp has main out and in yes.other factors are speakers. Over all very satisfied with my purchase very solid amp. Clear with good punch. Component compatibility will always be a factor. Your system for me can only be as good as your speakers [ Robert  Aug 03, 2016 ]
To bi-amp with that Sony model, you will want to use the Sony to power the high frequency section of your Polks and then connect the Marantz to the zone 2 / "B" speaker outputs of the receiver, to drive the woofers. You will have to go into the set-up menu and select "A+B" speakers. Sony rates the receiver into 6 Ohm loads. All that means is you should be confident that it will drive speakers that are rated at 6 Ohms (or higher) safely. Only analog signals will be output from the "zone 2 / B speaker" output. That should not be an issue. [ JAMES  May 05, 2015 ]
Hi Mark, Sorry but I can't help. I actually returned the receiver and never opened it. I was in the middle of painting and remodeling and figured it wasn't a good time to be messing around with this. Thanks, Pat [ PATRICK E  May 04, 2015 ]
Yes, but you don't have to use it. It's purely optional. It also has a 12V trigger, which works great for me. [ JAMES  Jul 04, 2014 ]
So frustrating it has no auto on feature... I have 5 airplay zones in my home and need and amps I can leave installed in a cabinet that turn on and off automatically when signal is sensed from an Airport Express. I have some older Sonance amps that do that now, but 2 have failed and I need to start replacing them with something better. [ shkalata  Jul 04, 2014 ]
My system shuts down after 30 minutes (phone call with mother-in-law) and did not restart automatically. [ Pat  Jul 04, 2014 ]
I have the mm7025 hooked up to a Marantz receiver there is a remote control cable as well as signal cables to the amp from the receiver. When I turn the receiver on the amp comes on .5 sec delay. the amp stays on as long as the receiver is on. It does go into standby mode when there is no audio signal present, but when in standby the ON blue light stays lit and the fan shuts down. The Amp is truly amazing as far as construction, twice the amp for the money compared to other brands.. [ GEOFFREY B  Jul 03, 2014 ]
I have seen no evidence that it has an auto on feature. My answer would be no to your specific question. However, it does have the capability to install a "trigger", which detects that another device has been turned on. For instance, I have a series of amps, only have to turn on one, the rest are automatically triggered. [ VINCENT JAME  Jul 03, 2014 ]
It depends on how hard you push the Klipsch now and how stout a 100W the Sony receiver is. Most A/V receivers, especially towards the lower end of the market, can't deliver anything like their rated power to all channels simultaneously. The Klipsch should be a relatively easy load, though, so unless you're really rockin', your Sony receiver should have enough power to drive them easily -for stereo music that is. If you like to crank up action flicks, putting an amp like the Marantz on the front channels will really lighten the load on your receiver. And even for stereo music listening, if you like the bass and like to listen at life-like levels, the bigger, beefier amp will definitely do a better job. [ JAMES  Feb 06, 2014 ]
Appreciate the clear and interesting answer. Thank you for taking the time to reply and to educate me. [ Larry Sacks  Jan 13, 2014 ]
Have never heard the fan. It does have one. [ NORMAN T  Jan 11, 2014 ]
It does have a cooling fan. It's speed is matched to the amount of heat that is being generated. I have had this amp for over a year, use it almost daily and have never heard the fan run. This amp has a very low operating temperature. [ KEN  Jan 11, 2014 ]