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Monolith by Monoprice M7100X 7x 90W/ch Home Theater Power Amplifier
$325
$650
50% off
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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.
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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.
Community Reviews
The Monolith 7 channel amp is mainly a headroom and expansion piece for home theater setups, especially when an AVR is hitting low power limits or needs extra channels. It can run cool, add dynamics, and help with future Atmos or 7.2.4 upgrades, while some setups barely change because the receiver already has enough power. The main cautions are reported hum on some units, a two prong power cord, and occasional compatibility quirks. It fits best when the system truly needs external amplification.
Common Questions (5)
Some units reportedly have a faint hum that can persist even after replacement, while others are silent from normal listening distance. Standby behavior also varies in reports: one measurement showed about 38W when turned off, while another setup showed 0W on standby and about 100W in operation.
It can help when the AVR is current-limited into low-impedance loads, because the external amp can supply more headroom and preserve dynamic peaks. For typical listening levels, though, several comments say the difference may be small unless your speakers are hard to drive or you listen very loudly.
Yes. The Denon 4300 can use amp assign or pre-outs to feed an external amp, but it does not have dedicated independent preamp mode; the 3800 does, which makes it more useful if you want to offload selected channels and reduce heat or power draw.
For normal movie listening at comfortable levels, 90WPC is usually enough, especially with moderately sensitive speakers and a subwoofer. Several comments note that many setups never approach the power where this amp matters, and that the bigger gains often come from room correction, speaker choice, or adding subs.
Yes. It is only a power amplifier, so it needs a preamp or AVR with pre-outs for volume control, input switching, and source management; it does not provide turntable or CD inputs on its own.
AI-generated summary based on comments from the community. Updated ago
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188 Comments
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The speaker doesn't give a crap about how much power is in reserve, it never sees it. It cares about how much power it gets. It sounds like you are never using more than like 10w.
Although dialog may coast along at 85 decibels, peaks can easily hit 120+ decibels in a movie theater. If you want those peaks to be undistorted at home, you need clean power reserves.
Thanks for sharing your experience!
I'm wondering if this issue is present on every unit or if it's a QC issue. Two units back to back, plus the Audioholics assessment definitely lends to defective design being the culprit.
How severe is the hum and were you able to reduce it? Do you consider the amp to be enjoyable even with the hum?
It drove my 7.1 Monitor Audio Gold Series setup at average levels with no problems.
My educated guess, this amp is not going to provide much(if at all) sonic benefit over those internal amps with your setup.
My point was if you go externals.
Get one that makes speaker choice pretty irrelevant(go big)!
You only need one for the speakers that will benefit from it.
Power supplies on AVRs will be pretty much irrelevant going forward also.
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If you mean me personally.
I actually didn't really need them.
But my plan was to eventually go to separates, main reason was for better room correction(ie DLBC).
Ran into a great deal on amps, went big.
Denon/Audyssey just kept improving, switching made no sense, not worth the very high cost.
2021 came around, with it, Dirac!
Denon got into the mix.
3800 + full suite Dirac cost me just under $1600!
There is nothing that touches that performance close to that cost!
Definitely zero reason for separates now!
If you have old 8Ω speakers, they might never go into limp....but 8Ω speakers are pretty rare nowadays.
The odd part is that there is no indication on the unit that you are in limp mode. The receiver just keeps working at the greatly reduced wattage.
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1) Get opinions and benchmarks from sites like ASR or AVS. I would have included Audioholics but they have paid advertising on their site (unlike ASR, which is entirely consumer driven).
2) You won't find much audio truth in SD and similar sites. It's full of vendors who want to steer you one way or the other. Just look at all the "fights" b/w supermanrob and turnne. They always feel like their commission's at stake when you bad mouth their products. LOL!
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