Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
frontpagevid1900 posted Yesterday 7:44 PM

Monoprice Monolith M2100X 2x90 W/Ch Home Theater Power Amplifier

$200

$400

50% off
+ Free S&Hat Monoprice
5.9K Views
Get Deal at Monoprice
Deal 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:
  • 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.

Original Post

Written by vid1900
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:
  • 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.

Original Post

Written by vid1900

Community Voting

Deal Score
+30
Good Deal
Get Deal at Monoprice

Price Intelligence

Model: Monolith by Monoprice M2100X 2x90 Watts Per Channel Stereo Home Theater Power Amplifier with RCA & XLR Inputs

Deal History 

Sale Price
Slickdeal
  • $NaN
  • Today

Current Prices

Sort: Lowest to Highest | Last Updated 7/28/2026, 12:50 AM
Sold By Sale Price
NewEgg$319.99

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

17 Comments

Sign up for a Slickdeals account to remove this ad.

Original Poster
Pro
Yesterday 7:54 PM
3.1K Comments
Joined Sep 2016
vid1900
Original Poster
Pro
Yesterday 7:54 PM
3.1K Comments

Our community has rated this post as helpful. If you agree, why not thank vid1900

Since this amp is 4ohm stable, it's perfect for modern speakers.

Puts up some pretty good specs on the bench:

https://downloads.monoprice.com/f...esting.pdf
1
Yesterday 11:19 PM
8 Comments
Joined Jun 2023
AquaHerring776Yesterday 11:19 PM
8 Comments
I quit. I tried the deal for this or the 3x90 watts when it orginally came here. When I sign in I get a pop-up saying the 50percent mov50. I saw this come back on and tried again and get for select customers only. Makes no sense because it shows the pop-up when I sign in. Guess ill just buy something from somewhere else
Yesterday 11:21 PM
5 Comments
Joined Apr 2014
peushuYesterday 11:21 PM
5 Comments
Worked for me. Ignore the pop-up
Yesterday 11:48 PM
302 Comments
Joined Nov 2020
DocBrewskieYesterday 11:48 PM
302 Comments
Pair that with a wiim ultra streamer and you have a banging set up.
Today 12:02 AM
523 Comments
Joined Jan 2014
RobertJasonToday 12:02 AM
523 Comments
Good quality class a/b amp. I have the 3-channel version of this which I use for my center and surrounds.
Pro
Today 12:21 AM
15.1K Comments
Joined Aug 2010
turnne
Pro
Today 12:21 AM
15.1K Comments
Nice amp for this price and probably actually more powerful in real world numbers than the majority of AVR's you see on slick deals
4 ohm stable/ capable and XLR connections as well
1
Original Poster
Pro
Today 12:42 AM
3.1K Comments
Joined Sep 2016
vid1900
Original Poster
Pro
Today 12:42 AM
3.1K Comments
Quote from AquaHerring776 :
I quit. I tried the deal for this or the 3x90 watts when it orginally came here. When I sign in I get a pop-up saying the 50percent mov50. I saw this come back on and tried again and get for select customers only. Makes no sense because it shows the pop-up when I sign in. Guess ill just buy something from somewhere else
Open a Private Window in Firefox, or clear all the Monoprice Cookies from your browser.

Yes, you will have to enter all your info again, but it's less frustrating than being caught in a loop.
1

Sign up for a Slickdeals account to remove this ad.

Today 1:02 AM
1.1K Comments
Joined Nov 2022
CleverCreature256Today 1:02 AM
1.1K Comments
Quote from DocBrewskie :
Pair that with a wiim ultra streamer and you have a banging set up.
The WiiM Amp Pro is a far better solution and has independently verified performance. Btw the mono price XLRs are unbalanced. Mostly useless.
1
Today 2:23 AM
1.2K Comments
Joined Mar 2014
motorxoomToday 2:23 AM
1.2K Comments
Can you link 2 of these together to power a 4.1 setup from a mixer source?
Original Poster
Pro
Today 3:22 AM
3.1K Comments
Joined Sep 2016
vid1900
Original Poster
Pro
Today 3:22 AM
3.1K Comments
Quote from motorxoom :
Can you link 2 of these together to power a 4.1 setup from a mixer source?
Yes.

Post the exact mixer you have if you need specific instructions.
Today 3:39 AM
5.7K Comments
Joined Dec 2014
wiffleToday 3:39 AM
5.7K Comments
Quote from CleverCreature256 :
The WiiM Amp Pro is a far better solution and has independently verified performance. Btw the mono price XLRs are unbalanced. Mostly useless.
Says who?
Today 4:49 AM
2 Comments
Joined Jul 2026
LavenderString100Today 4:49 AM
2 Comments
Just a heads up, these units are used. Half price for used might be acceptable for some, monoprice not being up front about it is a deal breaker for me.
1
Today 5:50 AM
4.2K Comments
Joined Mar 2007
3asym0ni3s9862936Today 5:50 AM
4.2K Comments
Quote from wiffle :
Says who?
Says monoprice : "Hook up is a breeze by utilizing either the unbalanced RCA inputs or unbalanced XLR inputs make it easy to connect to any receiver or pre/pro."
Pro
Today 11:06 AM
15.1K Comments
Joined Aug 2010
turnne
Pro
Today 11:06 AM
15.1K Comments
Quote from CleverCreature256 :
The WiiM Amp Pro is a far better solution and has independently verified performance. Btw the mono price XLRs are unbalanced. Mostly useless.
LOL

And how many thousands of dollars is an amp with fully dual differential balanced XLR connections?

And you are that concerned you are certainly not going to use any RCA inputs either...for any reason

Sign up for a Slickdeals account to remove this ad.

Pro
Today 11:08 AM
15.1K Comments
Joined Aug 2010
turnne
Pro
Today 11:08 AM
15.1K Comments
Quote from LavenderString100 :
Just a heads up, these units are used. Half price for used might be acceptable for some, monoprice not being up front about it is a deal breaker for me.
Where is this information coming from?

So they are selling used products with full manufacturer 3 year warranties?

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

Popular Deals

Trending Deals