Item 1 of 2
Item 1 of 2
frontpagevid1900 posted Jul 27, 2026 7:44 PM
Monoprice Monolith M2100X 2x90 W/Ch Home Theater Power Amplifier
$200
$400
50% off
+ Free S&Hat Monoprice
+ Free S&Hat MonopriceDeal Details
Monoprice has Monoprice Monolith M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier (43863) for $399.99 - 50% off w/ promo code MOVE50 in cart = $199.99. Shipping is free.
Thanks to Community Member vid1900 for finding this deal.
Features:
Thanks to Community Member vid1900 for finding this deal.
Features:
- 2 Channels of Amplification
- 90 Watts Per Channel into 8 ohms
- Unbalanced RCA Inputs
- XLR Inputs
- 3RU Height
- Class AB Amplification
- 3 Year Replacement Warranty
Editor's Notes
Written by johnny_miller | Staff- About this deal:
- Our research indicates this offer is $120 lower (37.5% savings) than the next best price from a reputable merchant at the time of this post.
- This offer matches a recent Frontpage Deal.
- Please see the original post for additional details & give the forum comments a read for helpful discussion.
- About this product:
- Rating of 4.7/5 from Monoprice customer reviews.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Monoprice has Monoprice Monolith M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier (43863) for $399.99 - 50% off w/ promo code MOVE50 in cart = $199.99. Shipping is free.
Thanks to Community Member vid1900 for finding this deal.
Features:
Thanks to Community Member vid1900 for finding this deal.
Features:
- 2 Channels of Amplification
- 90 Watts Per Channel into 8 ohms
- Unbalanced RCA Inputs
- XLR Inputs
- 3RU Height
- Class AB Amplification
- 3 Year Replacement Warranty
Editor's Notes
Written by johnny_miller | Staff- About this deal:
- Our research indicates this offer is $120 lower (37.5% savings) than the next best price from a reputable merchant at the time of this post.
- This offer matches a recent Frontpage Deal.
- Please see the original post for additional details & give the forum comments a read for helpful discussion.
- About this product:
- Rating of 4.7/5 from Monoprice customer reviews.
Community Voting
Deal Score
+47
Good Deal
Bad Deal
Price Intelligence
Model: Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo 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
- $NaN
- Today
Current Prices
Sort: Lowest to Highest | Last Updated 8/5/2026, 10:31 PM| Sold By | Sale Price |
|---|---|
 NewEgg | $319.99 |
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Top Comments
Puts up some pretty good specs on the bench:
https://downloads.monop
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47 Comments
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Where is this information coming from?
So they are selling used products with full manufacturer 3 year warranties?
"Just a heads up, these units are used"
So you assumed yours was used and that Monoprice was shipping everyone a used one?
Ok?!.....
Our community has rated this post as helpful. If you agree, why not thank vid1900
Monoprice does occasionally have "b-stock" and "open box" sales; but this is not one of them.
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4 ohm stable/ capable and XLR connections as well
https://www.bing.com/videos/river...&FORM=V
That along with some very good Sinad results in its preamp section
But honestly, if you are driving to reference levels of sound with harder to drive speakers, on a consistent basis, I would look else where than this amp
The RZ70..is the least expensive AVR I can think of...that will handle difficult loads at high consistent SPL's
I have personally owned its sisters units..Pioneer LX805 and Integra 8.4, which share the same amp/power supply
Very capable units and I have high expectations
In a 4ohm load..probably more capable than the RZ30
But honestly, if you are driving to reference levels of sound with harder to drive speakers, on a consistent basis, I would look else where than this amp
The RZ70..is the least expensive AVR I can think of...that will handle difficult loads at high consistent SPL's
I have personally owned its sisters units..Pioneer LX805 and Integra 8.4, which share the same amp/power supply
Very capable units and I have high expectations
You may want to look into a good multichannel amp...especially if you want long periods of louder volumes
I bought the Monolith and replaced the Yamaha avr. It sounds SO much better- Gemini thinks that the Yamaha just didn't have the oomph to handle the 4 ohm Elacs correctly. The monolith is easily the best $200 I've spent on audio gear in a while.
I had also tried two chi fi amps (fosi v3 monos and the topping mini300). Both sounded ok, but the monos burnt out in like 3 months and the topping sounded clean but the soundstage just wasn't there.
For $200 this amp was a steal. 🤷 ♂️ solid build, big toroidal transformer… I'm happy.
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