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
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$324.99.
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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
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
This Monolith 7-channel amp is mainly pitched as a clean-power upgrade for home theater setups that need extra channels or more headroom, especially with receivers that can process more than they can amplify. It is described as running cool, helping the AVR work less, and making a noticeable difference in dynamics or low-volume clarity in some systems. The main cautions are a reported faint hum on some units, a two-prong power cord with no ground, and the possibility that many normal listening setups will not sound much different from a decent receiver. It is a practical fit when you need external amplification more than raw loudness.
Home theater owners using a receiver that drops into low-power protection, because this amp can restore headroom and preserve dynamic peaks.
Listeners driving low-impedance or hard-to-drive speakers, because the amp is described as handling those loads better and staying stable at higher output.
People expanding a 7.1.2 or 7.2.4 theater, because it can power extra channels and free the receiver for calibration and future upgrades.
Owners who want a dedicated amp that can outlast AVR format changes, because it can be reused while receivers get replaced over time.
Buyers who need a quiet system, because faint hum and persistent noise have been reported on some units.
Apartment listeners at normal volumes, because the amp is repeatedly described as unnecessary overkill in that use case.
Shoppers expecting a simple plug-in amp for a turntable or CD player, because this unit is only an amplifier and needs a preamp for source control.
Stereo-only listeners, because a 7-channel amp is overkill when only two channels are needed.
Common Questions (6)
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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