Monolith by Monoprice 9-Channel (3x200 Watts + 6x100 Watts) Multi-Channel Home Theater Power Amplifier with XLR Inputs
Product # 33306
UPC # 889028084625
$2,199.99
*Affirm is not available for business or international orders
Qty: 1
$2,199.99
Qty: 2-9
$2,099.99
Qty: 10-19
$2,099.99
Qty: 20-49
$2,099.99
Qty: 50+
$2,099.99
Customers Also Shopped For
Questions and Answers
Do not include HTML, links, references to other stores, pricing or contact info.
My question is about:
If your question is about more than one item, click + to add them.
Browse 44 questions
Browse 44 questions
and 42 answers
The 9 channel can be driven in all channels at the same time?
A shopper
on Aug 2, 2024
Yes, 3 channels at 200 watts per channel and the remaining 6 channels at 100 watts per channel
- Reply
- Inaccurate
- David W on Aug 12, 2024
- Purchased on Jun 7, 2024
Yes. Three front channels at 200 W each and all six sorrounds at 100 W each at full bandwidth.
- Reply
- Inaccurate
- Marshall N on Aug 2, 2024
- Purchased on Dec 6, 2023
Vote for the best answer above!
Are these also made by ATI? And, want to confirm, these are Class A/B amps?
Robert C
on Sep 17, 2018
Yes to both. The paper manual/warnings that come with it actually have ATI's logo, not Monoprice's, on them.
- Reply
- Inaccurate
- Mark K on Aug 28, 2020
- Purchased on Jul 27, 2020
Vote for the best answer above!
where are the hdmi ins and outs?
A shopper
on Mar 18, 2019
BEST ANSWER: This is just an amplifier. You will need to utilize a pre/pro of some sort.
- Reply
- Inaccurate
- New User U Staff on Mar 18, 2019
BEST ANSWER: This is just an amplifier. You will need to utilize a pre/pro of some sort.
- Reply
- Inaccurate
- New User U Staff on Mar 18, 2019
There are none. It's just an amplifier.
- Reply
- Inaccurate
- Mark K on Aug 28, 2020
- Purchased on Jul 27, 2020
Vote for the best answer above!
The overall dimensions state it is 7 inches in height. Is that including the feet on the bottom or the chassis only?
JASON T
on Jun 3, 2020
Monolith by Monoprice 9-Channel (3x200 Watts + 6x100 Watts) Multi-Channel Home Theater Power Amplifier with XLR Inputs
Monolith by Monoprice 7x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier with XLR Inputs
Monolith by Monoprice 5x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier with XLR Inputs
Monolith by Monoprice 3x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier with XLR Inputs
Monolith by Monoprice 2x200 Watts Per Channel Two Channel Home Theater Stereo Power Amplifier with XLR Inputs
Monolith by Monoprice 7x200 Watts Per Channel Multi-Channel Home Theater Amplifier with XLR Inputs - Factory Refurbished/B-Stock
Monolith by Monoprice 2x200 Watts Per Channel Two Channel Home Theater Stereo Power Amplifier (Open Box)
Monolith by Monoprice 5x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier - Refurbished/B-Stock
Monolith by Monoprice 3x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier with XLR Inputs - Factory Refurbished/B-Stock
Monolith by Monoprice 11-Channel (3x200 + 8x100 Watts) Multi-Channel Home Theater Power Amplifier with XLR Inputs
Chassis only. I just purchased this based on what I'd thought I'd seen here before. With its feet on, height is 7 13/16". The front facade is very slightly taller; 7 7/8".
- Reply
- Inaccurate
- Michael G on Jul 22, 2023
Vote for the best answer above!
1200 watts total power output? Or is it 200w times 3. Or 100w times 6?
A shopper
on Jan 3, 2021
BEST ANSWER: 200 times 3 Channels, 100 times 6 channels.
- Reply
- Inaccurate
- New User U Staff on Jan 4, 2021
BEST ANSWER: 200 times 3 Channels, 100 times 6 channels.
- Reply
- Inaccurate
- New User U Staff on Jan 4, 2021
It is 200w each for the front left/right/center channels and then 100w each for the remaining six channels to cover the sides/rear/ceiling/atmos etc. 1200w total. Works great. I have had no issues. Plenty of power for music and movies in my 16ft x 30 ft theater room.
- Reply
- Inaccurate
- Edward M on Jan 4, 2021
- Purchased on May 19, 2020
Vote for the best answer above!
is there a rack mount kit and if so how many U spaces does it take?
Mikhail F
on Sep 11, 2022
BEST ANSWER: It's 4U but there currently is not a rackmount kit.
- Reply
- Inaccurate
- New User U Staff on Sep 13, 2022
BEST ANSWER: It's 4U but there currently is not a rackmount kit.
- Reply
- Inaccurate
- New User U Staff on Sep 13, 2022
They told me no due to the weight of them, they take up 4U
- Reply
- Inaccurate
- Eric J on Sep 11, 2022
- Purchased on Nov 6, 2021
Vote for the best answer above!
Is this 9 channel amp ok for speakers at 50 rms and 200 w peak ?
A shopper
on Jul 19, 2023
Yes the 9x works well in this configuration
- Reply
- Inaccurate
- Michael M on Jul 19, 2023
- Purchased on Aug 8, 2022
Vote for the best answer above!
does this have differential Outputs (to speakers?)
A shopper
on Feb 13, 2019
BEST ANSWER: This is not a bridgeable unit so you cannot share power to a speaker as I believe that is your question.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
BEST ANSWER: This is not a bridgeable unit so you cannot share power to a speaker as I believe that is your question.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
Vote for the best answer above!
does this have differential outputs (to speakers)?
New User U
on Feb 13, 2019
BEST ANSWER: No, this amplifier is a single ended design, not engineered in a "push-pull" configuration.
- Reply
- Inaccurate
- New User U Staff on Feb 13, 2019
BEST ANSWER: No, this amplifier is a single ended design, not engineered in a "push-pull" configuration.
- Reply
- Inaccurate
- New User U Staff on Feb 13, 2019
Vote for the best answer above!
Any update on the availability of this Amp? It used to be listed as 2/15/2019.
chris k
on Feb 25, 2019
Vote for the best answer above!
I have the 7x200 monoprice amp already, but I don't need all 7 channels with 200w. Will there be a trade-in program?
A shopper
on Mar 9, 2019
BEST ANSWER: There will not be a trade in program.
- Reply
- Inaccurate
- New User U Staff on Mar 11, 2019
BEST ANSWER: There will not be a trade in program.
- Reply
- Inaccurate
- New User U Staff on Mar 11, 2019
Vote for the best answer above!
Vote for the best answer above!
What is the power output at 4ohms?
A shopper
on Apr 10, 2019
BEST ANSWER: Thank you for your question.
You can find the wattage of this amp at 4 ohms below:
EIA 1kHz Output Power at 4 Ohms*375 watts (3 channels)
FTC Full Bandwidth Output Power at 4 Ohms**300 watts (3 channels)
You can find the wattage of this amp at 4 ohms below:
EIA 1kHz Output Power at 4 Ohms*375 watts (3 channels)
FTC Full Bandwidth Output Power at 4 Ohms**300 watts (3 channels)
- Reply
- Inaccurate
- Tyler C Staff on Sep 6, 2019
BEST ANSWER: Thank you for your question.
You can find the wattage of this amp at 4 ohms below:
EIA 1kHz Output Power at 4 Ohms*375 watts (3 channels)
FTC Full Bandwidth Output Power at 4 Ohms**300 watts (3 channels)
You can find the wattage of this amp at 4 ohms below:
EIA 1kHz Output Power at 4 Ohms*375 watts (3 channels)
FTC Full Bandwidth Output Power at 4 Ohms**300 watts (3 channels)
- Reply
- Inaccurate
- Tyler C Staff on Sep 6, 2019
Vote for the best answer above!
Can the 9 channels amplifier use 240 voltage electrical supply ?
A shopper
on May 19, 2019
Vote for the best answer above!
Can this amplifier run 9.2 channel ?
New User U
on Jul 15, 2019
BEST ANSWER: It can power 9 channels. If your .2 channel is going to powered subwoofers then this would work just fine.
- Reply
- Inaccurate
- New User U Staff on Jul 16, 2019
BEST ANSWER: It can power 9 channels. If your .2 channel is going to powered subwoofers then this would work just fine.
- Reply
- Inaccurate
- New User U Staff on Jul 16, 2019
Vote for the best answer above!
will the monolith 9 channel amplifier work with my Yamaha rx a3030 av receive?
A shopper
on Aug 31, 2019
Vote for the best answer above!
The specs state 28 dB gain, is that both RCA & XLR? Or is balanced (XLR) at 23 dB like the ‘Pro’ spec?
erik g
on Oct 10, 2019
Vote for the best answer above!
What would be the power output for the 6 lower power channels running speakers at 4ohms?
Trevor P
on Apr 5, 2020
BEST ANSWER: Double it, you will get 200 watts at 4 ohms.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
BEST ANSWER: Double it, you will get 200 watts at 4 ohms.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
Vote for the best answer above!
The specs sheet references power for the front 3 channels at 8 ohm and at 4 ohm. But it only shows the power for the other 6 channels at 8 ohms. Can the other 6 channels handle 4 ohms? If so, what is the rated power of the other 6 channels at 4 ohms? And if they can't handle 4 ohms, can they handle 6 ohms? And if so, what would the power be for the 6 channels at 6 ohms?
New User U
on May 31, 2020
BEST ANSWER: This amp is stable down to 2 ohms. At 4 ohms, you should be getting roughly 135-145 watts.
- Reply
- Inaccurate
- New User U Staff on Jun 1, 2020
BEST ANSWER: This amp is stable down to 2 ohms. At 4 ohms, you should be getting roughly 135-145 watts.
- Reply
- Inaccurate
- New User U Staff on Jun 1, 2020
Vote for the best answer above!
What is the spacing of the speaker connectors?
A shopper
on Jul 24, 2020
BEST ANSWER: It seems pretty standard to me, maybe an inch at the outer rim of the speaker connection. It seemed reasonable to me and I did not struggle using standard banana plugs.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
BEST ANSWER: It seems pretty standard to me, maybe an inch at the outer rim of the speaker connection. It seemed reasonable to me and I did not struggle using standard banana plugs.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
Vote for the best answer above!
Can I run the big channels at 4ohms and than also have 2 4ohm speakers mixed with 8ohm speakers for the remaining channels and could I swap out one of the big channels.for an 8ohm speaker while maintaining mixed speakers?
A shopper
on May 7, 2021
BEST ANSWER: It will not allow me to post a link to the article I read, but if you do a search for can I mix 4 ohm and 8 ohm speakers there is an article on the woofer guy site where he references that you can mix them. These channels are all independent so I do not see why it would be a problem. I have though never attempted this on my own so grain of salt.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
BEST ANSWER: It will not allow me to post a link to the article I read, but if you do a search for can I mix 4 ohm and 8 ohm speakers there is an article on the woofer guy site where he references that you can mix them. These channels are all independent so I do not see why it would be a problem. I have though never attempted this on my own so grain of salt.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
Vote for the best answer above!
Trigger input ? Does this amp have a 12v trigger input ?
A shopper
on May 12, 2021
Vote for the best answer above!
Can I use a channel to power a subwoofer along with a 7.1 speaker array?
New User U
on Sep 1, 2021
BEST ANSWER: I would not recommend this kind of configuration, get a monoblock or bridgeable two channel for a subwoofer would be my personal recommendation. Subwoofers are hungry so check the wattage rating and select an amp accordingly.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
BEST ANSWER: I would not recommend this kind of configuration, get a monoblock or bridgeable two channel for a subwoofer would be my personal recommendation. Subwoofers are hungry so check the wattage rating and select an amp accordingly.
- Reply
- Inaccurate
- Eric J on Nov 10, 2021
- Purchased on Nov 6, 2021
Vote for the best answer above!
I believe 28dB gain is for 3 200W channels. Is it 25dB for 6 100W channels?
Jaehoon H
on Sep 13, 2021
BEST ANSWER: It's the same across all the channels.
- Reply(1)
- Inaccurate
- New User U Staff on Sep 13, 2021
BEST ANSWER: It's the same across all the channels.
- Reply(1)
- Inaccurate
- New User U Staff on Sep 13, 2021
Vote for the best answer above!
I see that the answers to gain questions are that 200W channels and 100W channels have the same 28dB gain. Does this mean that 100W channels provide same output levels as the 200W ones and just clip at lower input level than 200W ones do?
Jaehoon H
on Nov 29, 2021
BEST ANSWER: Yes, but the 100W channels are designed for effects/surround speakers. It is unlikely you will ever max out 100W on a channel like that.
- Reply
- Inaccurate
- New User U Staff on Dec 1, 2021
BEST ANSWER: Yes, but the 100W channels are designed for effects/surround speakers. It is unlikely you will ever max out 100W on a channel like that.
- Reply
- Inaccurate
- New User U Staff on Dec 1, 2021
Vote for the best answer above!
How do you hook up a dedicated subwoofer to the 9C monolith amp?
A shopper
on Feb 17, 2022
BEST ANSWER: You don't. The subwoofer needs to be hooked up to the receiver or pre/pro.
- Reply
- Inaccurate
- New User U Staff on Feb 18, 2022
BEST ANSWER: You don't. The subwoofer needs to be hooked up to the receiver or pre/pro.
- Reply
- Inaccurate
- New User U Staff on Feb 18, 2022
Vote for the best answer above!
How to hook up a dedicated subwoofer to 9X monolith amp?
New User U
on Feb 17, 2022
BEST ANSWER: You don't. The subwoofer needs to be hooked up to the receiver or pre/pro.
- Reply
- Inaccurate
- New User U Staff on Feb 18, 2022
BEST ANSWER: You don't. The subwoofer needs to be hooked up to the receiver or pre/pro.
- Reply
- Inaccurate
- New User U Staff on Feb 18, 2022
Vote for the best answer above!
Vote for the best answer above!
On this amp it’s 3x @ 200 and 6x @ 100 at 8ohms. What would the numbers be if I’m running speakers that are 4 ohms like the Arendal line up?
A shopper
on Nov 7, 2022
Vote for the best answer above!
how much current capacity is needed for this amp? I only have a 15 amp circuit available, not sure if that is enough or if it would limit the output capabilities. I would be running it with 9 4 ohm rated speakers in a 5.2.4 set-up
A shopper
on Jul 14, 2023
Vote for the best answer above!
Questions For Similar Products
Reviews
5.0 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
12
0
0
0
0
Rated 5 out of 5
Gotta admit the 9x has brought my Klipsch 820?s to life have it paired up with Onkyo rz50 amazing!! delivery was great packaged very well for protection only recently upgraded a/v system it all sounds great!! Overall does as promoted. Definitely recommend for anyone upgrading from 5.1
- Was this review helpful? Yes (0) No (1)
- Flag as Inappropriate
- Was this review helpful? Yes (0) No (1)
- Flag as Inappropriate
Rated 5 out of 5
Great Investment
With this Monolith Amplifier was a good Investment for Me. I am using it From The Power pre_outs on my Pioneer SC-99 to Power My Martin Logan Esl's ML Motif center channel and My ML Fx Surrounds....I am very pleased with the Difference the Amp Makes. I would Recommend this Amplifier for anyone looking to Purchase it.
- Was this review helpful? Yes (0) No (1)
- Flag as Inappropriate
- Was this review helpful? Yes (0) No (1)
- Flag as Inappropriate
Rated 5 out of 5
Really good amplifier for the money
Added Mar 17, 2022
- Was this review helpful? Yes (0) No (3)
- Flag as Inappropriate
- Was this review helpful? Yes (0) No (3)
- Flag as Inappropriate
Rated 5 out of 5
I would definitely recommend. Way better than my marantz mm7055 amp. The only problem I had was with the ground loop. I had to buy a ground loop isolator for the cable. It took me a while to figure it out lol. No humming at all now even at high volume.
- Was this review helpful? Yes (2) No (1)
- Flag as Inappropriate
- Was this review helpful? Yes (2) No (1)
- Flag as Inappropriate
Rated 5 out of 5
Very impressed so far
I now have the HTP-1, 7 channel, and this 9 channel amp. I came from a Denon 6700h and I was skeptical of really being able to tell the difference without being an audiophile. I was very much mistaken and the clarity as well as speaker separation is just night and day. I wish I had upgraded to separates years ago now.
- Was this review helpful? Yes (2) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (2) No (0)
- Flag as Inappropriate
Rated 5 out of 5
Solid Amplifier
I'd been running a Yamaha Adventage 3080 for a year now and was looking to transition to separates, and after some research I settled on this amp as a start. My Elac unif 2.0 bookies were somewhat anemic in straight / 2 channel mode when playing rock and heavy metal, and as a consequence I would switch to 9 channel to compensate. This amplifier thankfully corrected that. It not only gave my bookies a fuller mid and lower mid base extension, it warmed the sound, warding off hearing fatigue that used to creep in. It's almost like it woke up - I can listen to heavy metal again on two channel mode!
I was very skeptical I'd hear a difference coming from a high-end receiver, but so far this amp is a keeper and I'm looking forward to complimenting this with a processor.
This is of course my subjective experience, and your mileage may vary.
Here's my setup in case it helps:
Room size: 5000 square feet open concept living room with no acoustic treatments
Equipment: Yamaha 3080 > monoprice xlr cables + KabeDirect rca > Monolith 9x > copper+CCA speaker wires going to 7 speakers.
Seating distance: Twelve feet from LCR
I was very skeptical I'd hear a difference coming from a high-end receiver, but so far this amp is a keeper and I'm looking forward to complimenting this with a processor.
This is of course my subjective experience, and your mileage may vary.
Here's my setup in case it helps:
Room size: 5000 square feet open concept living room with no acoustic treatments
Equipment: Yamaha 3080 > monoprice xlr cables + KabeDirect rca > Monolith 9x > copper+CCA speaker wires going to 7 speakers.
Seating distance: Twelve feet from LCR
- Was this review helpful? Yes (7) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (7) No (0)
- Flag as Inappropriate
Rated 5 out of 5
So very pleased!
I purchased the monolith 9 channel amplifier a few months back to power my home theater system. I'm using it with an Arcam AV40 and all XLR connections. I have this amplifier driving a set of Focal Aria 948's, the matching Aria center channel and three sets of SVS prime elevation surrounds. Previously I had this setup running through Peachtree and Rotel amplifiers. Installation was easy, other than the sheer weight of the amplifier. But I was immediately impressed and blown away at the control that this amplifier has. The power that it provides is relentless and matches very well with my Focals. I would recommend this amplifier 100%! It is a powerhouse but also warm and delicate. You will not find another amplifier this well made at this price range, or even at a higher price range. Of you are on the fence about this purchase, do some research, read where it is made, and by who and you will find that this is an absolute steal.
- Was this review helpful? Yes (5) No (1)
- Flag as Inappropriate
July 17, 2021
- Was this review helpful? Yes (5) No (1)
- Flag as Inappropriate
Rated 5 out of 5
Monolith 9x impresses
I would recommend this to anyone looking to go the separates route for a home theater. I bought this to pair with a Marantz AV7705 as an upgrade to an old Yamaha AVR and three channel amplifier. It sounds incredible and seems to have opened up my Martinlogan Motion 60xt towers, 50xt center and 15 surrounds. I can't wait to add in-ceiling atmos speakers in the future.
My son said that the current 5.1 system already sounds like watching movies at the theater even before we add the atmos speakers.
My son said that the current 5.1 system already sounds like watching movies at the theater even before we add the atmos speakers.
- Was this review helpful? Yes (2) No (1)
- Flag as Inappropriate
- Was this review helpful? Yes (2) No (1)
- Flag as Inappropriate
Rated 5 out of 5
Quality Power
I purchased the Monolith amplifier to use the XLR interconnects on the Monolith HTP1. Other features of interest were fan less cooling and separate power transformers for 3x200watt and 6x100watt
channels. Monoprice made it an easy decision offering it in a combo deal. I chose 9 channel version planning evolve my 5.1 setup to 5.x.4 system. I am very happy with construction quality and ecstatic with the sound.
channels. Monoprice made it an easy decision offering it in a combo deal. I chose 9 channel version planning evolve my 5.1 setup to 5.x.4 system. I am very happy with construction quality and ecstatic with the sound.
- Was this review helpful? Yes (6) No (1)
- Flag as Inappropriate
- Was this review helpful? Yes (6) No (1)
- Flag as Inappropriate
Rated 5 out of 5
great value, very good sound
Picked this up in combo with an HTP-1 when they were running a combo sale, and I would say it's great value. I'm admittedly not an audiophile, and primarily listen to movies, not music, so someone else with a more discerning ear might notice minor issues, but to my ear they sound very good, and when listening to movies that I know exactly how they are supposed to sound, these match that.
I will vouch they are very quiet - I can put my ear right up to the speakers, and when there's no sound supposed to be playing through those speakers, there's nothing - no hum or background noise.
The amplifier itself does make a loud click/clunk when turned on, but so clicks or thumps through the speakers.
I can't say I've really pushed mine - it's running the overhead and wide channels, not the main LCR or surrounds - but it's never clipped or distorted, and hasn't even gotten very hot. ATI-built amplifier of this quality at this price point is hard to beat, and very happy with the purchase.
I will vouch they are very quiet - I can put my ear right up to the speakers, and when there's no sound supposed to be playing through those speakers, there's nothing - no hum or background noise.
The amplifier itself does make a loud click/clunk when turned on, but so clicks or thumps through the speakers.
I can't say I've really pushed mine - it's running the overhead and wide channels, not the main LCR or surrounds - but it's never clipped or distorted, and hasn't even gotten very hot. ATI-built amplifier of this quality at this price point is hard to beat, and very happy with the purchase.
- Was this review helpful? Yes (4) No (3)
- Flag as Inappropriate
- Was this review helpful? Yes (4) No (3)
- Flag as Inappropriate
Reviews for Similar Products