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expiredvid1900 posted Jul 3, 2026 1:53 AM
Monolith by Monoprice M7100X 7x 90W/ch Home Theater Power Amplifier
$325
$650
50% off
+ Free S&Hat Monoprice
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Monoprice has Monolith by Monoprice M7100X 7x90 Watts Per Channel Multi-Channel Home Theater Power Amplifier with RCA & XLR Inputs (43866) on sale for $649.99 - 50% with promo code SHOP50 in cart = $324.99. Shipping is free.
Thanks to Community Member vid1900 for sharing this deal.
Details:
Thanks to Community Member vid1900 for sharing this deal.
Details:
- 7-channel Class AB power amplifier
- 90W per channel into 8 ohms, all channels driven
- THD < 0.02% with SNR > -100 dB
- Unbalanced RCA and XLR inputs
- 3RU height
Editor's Notes
Written by SaltyOne | Staff- Rated 4.9 out of 5 stars from customer reviews.
- At the time of this posting, our research indicates that this is $195 lower than the next best comparable online prices starting from $519.99.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Monoprice has Monolith by Monoprice M7100X 7x90 Watts Per Channel Multi-Channel Home Theater Power Amplifier with RCA & XLR Inputs (43866) on sale for $649.99 - 50% with promo code SHOP50 in cart = $324.99. Shipping is free.
Thanks to Community Member vid1900 for sharing this deal.
Details:
Thanks to Community Member vid1900 for sharing this deal.
Details:
- 7-channel Class AB power amplifier
- 90W per channel into 8 ohms, all channels driven
- THD < 0.02% with SNR > -100 dB
- Unbalanced RCA and XLR inputs
- 3RU height
Editor's Notes
Written by SaltyOne | Staff- Rated 4.9 out of 5 stars from customer reviews.
- At the time of this posting, our research indicates that this is $195 lower than the next best comparable online prices starting from $519.99.
Community Voting
Deal Score
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Price Intelligence
Model: Monolith by Monoprice M7100X 7x90 Watts Per Channel Multi-Channel Home Theater Power Amplifier with RCA & XLR Inputs
Deal HistoryÂ
Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price".
Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.
Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.
Sale Price
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- Today
Current Prices
Sort: Lowest to Highest | Last Updated 7/26/2026, 10:43 PM| Sold By | Sale Price |
|---|---|
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Top Comments
If you want to see how a bunch of the new receivers only put out ~30 watts when they go into a secret 'limp mode' with no indication that you are not getting the 135wpc you paid for......
Even if you forget and leave the internal amps on, the heatsink fans will never come on because they are not actually under load.
https://www.audioscienc
The 30wpc that you are currently getting from the receiver seems loud, but you are missing out on the dynamic peaks that can be 100w, even on moderate volume movie watching.
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187 Comments
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Even if it didn't, you would connect an external amp to the "pre-outs" and just not plug anything into the receiver's speaker terminals. The receiver runs cooler when it does not have to deliver power to the speakers.
Thanks! Just pulled the trigger. Hopefully it gives the speakers a little more headroom on the 4300, and will help prevent the 30 wpc crippling when I get the 3800.
I don't think either Denon has XLR outputs, so I'll have to buy RCA cables. Any recommendations on retailers/specifications for the RCA cables? These would be a very short run cables. I'm thinking Monoprice must sell something that's decent.
Background
I have a Marantz SR7013 9.2 channel Atmos /dtsx receiver (got a nice deal in 2020) driving a surround setup.
It powers 9 channels (of course as it is a 9.2 channel receiver); however it is capable of processing 11 channels with external amplification -
So I hope this M7100X will be a good choice to expand my current 5.2.4 setup to a 7.2.4 setup...
1) Which amp to use for each set of speaker channels?
Now just wondering which of the two (SR7013 receiver and M7100X amplifier) to drive the various speakers in my setup.
2) 'Rear surround' speaker options / recommendations?
I do have some old (no longer used for many years) Advent Legacy speakers lying around.
However, they are a bit large (wide) and the way the back 'wall' of my home theater room is laid out, and what I already have against the back wall (media cabinet furniture), the Legacy speaker's width is not ideal (for one side of the room at least).
I am wondering if anyone has anyone good rear surround speaker recommendations?
(I bought the Advent Legacy new in 1988 / 1989 or so and they still look completely new, even the foam surrounds are still in flawless condition. However, I stopped using them when I bought some powered Infinity Overture 2 speakers (in use now) - still work great (even the built-in powered portion). They also look great still).
Thanks in advance for any recommendations for rear surround speakers, as well as any suggestions in terms of whether to use the Marantz SR7013 receiver vs. M7100X amplifier to power each of the various channels in a 7.2.4 setup.
Thanks! Just pulled the trigger. Hopefully it gives the speakers a little more headroom on the 4300, and will help prevent the 30 wpc crippling when I get the 3800.
I don't think either Denon has XLR outputs, so I'll have to buy RCA cables. Any recommendations on retailers/specifications for the RCA cables? These would be a very short run cables. I'm thinking Monoprice must sell something that's decent.
Here is a 6 channel example:
https://www.amazon.com/RECOIL-Oxy...B0BBFPYBD
I'm driving so I can't search you exactly what you need, but a 7 or 8 channel snake, with whatever length you want (leave some slack so you can work on it over the years).
Our community has rated this post as helpful. If you agree, why not thank vid1900
If you only need 2 channels, this is the unit you need and is $199 after the SHOP50 code:
https://www.monoprice.c
I tried to pair them with a of the top-of-the-line (well, maybe a step or two down, but still very expensive) Yamaha Aventage amp, and they sounded OK in stereo mode, but trying to run full surround sound with make the amp involuntarily cut output or even shut off entirely. For context, I don't listen to music at very high volumes—even reference volume (85db) feels very loud to me. So it truly is a quirk of speaker design that made these old speakers kill amps. As I understand it, it's principally a result of crossover architecture.
Anyway, if in the exceedingly unlikely event you happen to have speakers like that and are tired of killing amps and receivers, this Monolith should solve your problem (assuming it has an adequate power supply).
(FWIW, I completely got out of passive speakers when I learned how good active designs have gotten. My main setup now is Kali studio monitors with room correction. They're way smaller, not power hogs, and sound better than anything I've tried before. And they're pretty cheap.)
Here is a 6 channel example:
https://www.amazon.com/RECOIL-Oxy...B0BBFPYBD
I'm driving so I can't search you exactly what you need, but a 7 or 8 channel snake, with whatever length you want (leave some slack so you can work on it over the years).
Oh, that's cool. So no issue with the wires being so close causing hum? Guess they have enough shielding. Are these manufacturers selling on Amazon pretty decent?
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The Klipsch are listed as 8 ohm speakers, but they actually dip down to 5.6 ohms. I'm not sure if that's low enough to trigger the limp mode; they are pretty easy speakers to drive.
If you have car audiophile friends, see if one of them will lend you their watt meter and measure if you are stuck in limp mode or not.
Oh, that's cool. So no issue with the wires being so close causing hum? Guess they have enough shielding. Are these manufacturers selling on Amazon pretty decent?
I like to buy cables where I can unscrew the barrel and re-solder the terminals if they should break. So that is what I look for in a cable.
Expensive cables don't do anything at all:
https://youtu.be/dLghg0QXPzs?si=
The Klipsch are listed as 8 ohm speakers, but they actually dip down to 5.6 ohms. I'm not sure if that's low enough to trigger the limp mode; they are pretty easy speakers to drive.
If you have car audiophile friends, see if one of them will lend you their watt meter and measure if you are stuck in limp mode or not.
Thanks! Just pulled the trigger. Hopefully it gives the speakers a little more headroom on the 4300, and will help prevent the 30 wpc crippling when I get the 3800.
I don't think either Denon has XLR outputs, so I'll have to buy RCA cables. Any recommendations on retailers/specifications for the RCA cables? These would be a very short run cables. I'm thinking Monoprice must sell something that's decent.
https://www.audioscienc
Onkyo RZ50 (and clones Pioneer 505 and Integra DRX 5.4)
Onkyo 7100 (and clones Pioneer 305 and Integra DRX 3.4)
RZ30
The easiest way to tell is once the AVR is in your house, listen as you normally would at a decently high volume. Switch the AVR to 4 ohm impedance mode and see if you can tell a difference. If you don't, then the AVR and your speaker setup is susceptible to this. The idea is that switching to the 4 ohm mode should automatically sap power. If there's no difference in dB or quality of the sound in the lower impedance mode, you are "limping" with no indication!
The bigger brothers Onkyo RZ70, Pioneer 805, and Integra DRX 8.4 doesn't suffer from this. Then again, neither do the Denon 3800, 4800, etc. that the limp mode AVRs are commonly compared against.
There are WAY too many IFs for some universal correct answer.
Limp mode is more a paper issue/flaw than a real world one.
"Comfortably loud levels" doesn't come close to this limp mode issue.
Now if you had a very large environment, 9+ power demanding speakers and listen at ear bleeding levels, yes probably gonna be an issue to consider in that scenario.
TBH if you're not satisfied with sound quality & trying to improve it.
There are quite a few others things that would improve sound better than power will.
Especially when you are using a good sub(s).
Correct, the 4300 does not have a dedicated preamp mode.
FYI "amp assigned" is just that, you can assign the amp/channel, nothing to do with preamp mode.
The 3800 does offer dedicated(independent) preamp mode.
Nice benefit that was only offered in their prior flagship model.
Especially if only some of your speakers need/benefit from the extra power.
My suggestion, if you want to improve your sound, look into A1Evo express.
It's a game changer for Audyssey, basically gives you comparable Dirac Room Correction performance for free!
It might not be as good as Dirac ART but that's a whole other rabbit hole especially since it's another $600 cost(if using a sub).
https://www.youtube.com/watch?v=fN5cH_T
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I have not read all of Amir's reviews, but I got a used Pioneer 505 cheap when my favorite local audio store got it in trade because of the Limp Mode.
Since I have a rack of quarter century old Parasound 3500 amps (500wpc into 4 ohms), the Pioneer was perfect for me, since I don't need to use the internal amps.
Receivers are junk tech that quickly becomes outdated and replaced constantly. Quality amps are good for decades (well, at least until I have to re-cap them, lol)
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