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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
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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
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.
Common Questions (6)
Some units reportedly have a faint hum that does not go away, while others are silent even with high-sensitivity speakers. Power draw reports also vary: one measurement showed about 38W in standby and about 43W during Blu-ray playback with no speakers connected, so a power strip may be the safest way to fully cut power.
Yes, the Denon 4300 can feed it through pre-outs and amp assign, but it does not have a dedicated preamp mode, so its internal amps still draw power. The Denon 3800 does have dedicated independent preamp mode, which makes it a better match if you want to offload channels and reduce heat or power use.
For many normal-use setups, the difference can be small or hard to hear, especially if the AVR already drives the speakers comfortably. The main gains are more headroom, better dynamics at higher levels, and less strain on the receiver rather than a guaranteed night-and-day sound change.
For typical movie listening at comfortably loud levels, 90WPC is usually enough, especially with reasonably sensitive speakers and a normal-sized room. Several comments note that 30WPC is already quite loud in real-world use, and that the bigger benefit of an external amp is extra headroom for dynamic peaks rather than a dramatic loudness increase.
Yes, if you need external amplification for extra processed channels or want room to grow beyond a 9-channel AVR, it can be a practical buy. It is also useful when you want to move some channels off the AVR to reduce heat and preserve headroom for future expansion.
It can lock into limp mode if it is asked to deliver more than 30WPC into 4 ohms, and there is no clear indicator on the unit when that happens. With 8-ohm speakers it may never trigger, and the easiest check is to compare sound at normal volume before and after switching the AVR to 4-ohm mode or measure output with a watt meter.
AI-generated summary based on comments from the community. Updated ago
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188 Comments
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D&M cost more because they offer more and believed to be higher/better quality.
People like to pay extra for "peace of mind" but it's not a benefit if you don't use it.
Especially when it comes to Dirac, you "pay to play" even to have access to play.
Did it come with the 12v turn on wires, or did you have to supply your own?
I would suggest returning it especially if you're considering moving up to Atmos.
It is costly to do properly.
That's no surprise.
I would suggest returning it especially if you're considering moving up to Atmos.
It is costly to do properly.
Bad advise rob, and you are no superman. 😂
Did it come with the 12v turn on wires, or did you have to supply your own?
I do notice increased volume from the rear facing drivers, which is nice.
Waiting on everyone to leave the house to re-do the Audyssey setup.
Only power cables are provided. I also noticed that there is no 12V trigger for the main zone on my receiver. Only for zones 2 and 3.
The amp was warm to touch in the morning after being on standby overnight, but kill-a-watt shows no power draw.
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I do notice increased volume from the rear facing drivers, which is nice.
Waiting on everyone to leave the house to re-do the Audyssey setup.
Only power cables are provided. I also noticed that there is no 12V trigger for the main zone on my receiver. Only for zones 2 and 3.
The amp was warm to touch in the morning after being on standby overnight, but kill-a-watt shows no power draw.
Good high current amps should "sound" neutral to those who are not blessed with "golden ears". You'll easily notice the difference vs inferior amps if you have low impedance complex phase angle speakers (less than 3.5 ohm below 150 Hz). I would definitely keep the amp if it comes with +900VA transformer and +60000 microfarad main filter capacitors. Suspect no Japanese capacitors (Panasonic, United Chemicon, Rubycon, Nichicon, etc) inside at this price.
There is some current going into the amp if it is still warm overnight. Suspect your meter is bad, or something else is keeping the amp from going into sleep mode. Modern amps don't need more than 0.5 W in standby mode. You can check the power draw by connecting an ammeter in series to the AC line and measure the current. Multiply the current (A) by 120 (V) to obtain incoming power in WATT. The amp is rated at 1200 W per the posted picture.
I'll contact Monoprice to see if they'll swap it. Anyone else having the same issue, please post.
I wonder why the 1200W rating. 90*7 = 630 W. Rated at nearly double. 🤔
So if you "really need one", this "barely" made a difference.
Imo you're still going to need another amp to make more of a difference(over 135wpc).
Yes that will be costly.
Hey, but what do I know with my common sense logic!
Apparently I'm clueless,vendor,salesman, lousy, idiot, pretty sure I missed a few.
May I make a final good "advise".
Put me on ignore & if I respond to another one of your comments just ignore it.
It will help with all these pointless post.
Good luck!
lol well if you do, I know you we NEED a new AVR.
So if you "really need one", this "barely" made a difference.
Imo you're still going to need another amp to make more of a difference(over 135wpc).
Yes that will be costly.
Hey, but what do I know with my common sense logic!
Apparently I'm clueless,vendor,salesman, lousy, idiot, pretty sure I missed a few.
May I make a final good "advise".
Put me on ignore & if I respond to another one of your comments just ignore it.
It will help with all these pointless post.
Good luck!
The reason I will really need an amp is not necessarily for more power, but when the receiver has only 7 or 9 channels of amplification but processes and has pre outs for more channels. It does not have to be costly.
Nothing personal here. Just discussing AVRs and amps.
I'll contact Monoprice to see if they'll swap it. Anyone else having the same issue, please post.
I wonder why the 1200W rating. 90*7 = 630 W. Rated at nearly double. 🤔
Long term listening at sound pressure level (SPL) greater than 80 dB will result in permanent hearing damage. The SPL at 3m (10ft) with a pair of moderately sensitive 87 dB speakers and 90W speaker input is 100 dB, This 20 dB headroom (100 minus 80) is ideal for uncompressed recording/soundtrack. The SPL drops to 95 dB with 30W speaker input. You'll definitely hear the difference between 30W and 90W input if the nominal listening level is 80 dB and the recording material contains wide dynamic range soundtrack.
A listening position that's 15 ft away will require 200W speaker input to reach the same sound pressure level attained at 10 ft. Use the links below to calculate the theoretical and nominal SPL level at your listening position.
http://myhometheater.h
https://www.omnicalcula
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Only power cables are provided. I also noticed that there is no 12V trigger for the main zone on my receiver. Only for zones 2 and 3.
If you are not using zone 2 or 3, then I guess turn one of them on just for the 12v trigger to your new amp.
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