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expiredTattyBear | Staff posted Feb 08, 2024 05:04 PM
expiredTattyBear | Staff posted Feb 08, 2024 05:04 PM

Monoprice Monolith Multi-Channel Home Theater Power Amplifiers: 7x90W $371, 3x90W

& More + Free S/H

$263

$500

47% off
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Update: This popular deal is still available

Various Merchants have Monoprice Monolith Multi-Channel Home Theater Power Amplifiers (Various) on sale at prices listed below. Shipping is free.

Thanks to Staff Member TattyBear for finding this deal.

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Editor's Notes

  • About this Product:
    • 3-Year Replacement Warranty
  • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

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Deal Details
Community Notes
About the Poster
Update: This popular deal is still available

Various Merchants have Monoprice Monolith Multi-Channel Home Theater Power Amplifiers (Various) on sale at prices listed below. Shipping is free.

Thanks to Staff Member TattyBear for finding this deal.

Available Deals:

Editor's Notes

  • About this Product:
    • 3-Year Replacement Warranty
  • Please see original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

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Top Comments

youra6
10825 Posts
1875 Reputation
You're not getting anywhere near the rated specs with 7-9 channels driven on most modern AVRs.
supermanrob
12624 Posts
1452 Reputation
Unfortunately there are too many IFs for a universal answer.
This quickly becomes a big rabbit hole because of that.

In very basic terms is your receiver " putting out" efficient enough power to drive your speakers to your preferred listening levels.

I would point out if you're looking to upgrade the sound you hear, you should look at your speakers, their placements & room environment 1st.
That would have a much bigger difference in SQ over an external amp imo.
sdschramm
166 Posts
80 Reputation
Is there going to me much of a difference compared to what a modern AVR can put out? Most AVR's can output anywhere from 75W - 125W channel and yeah when you're driving more then two speakers it will be on the lower side, but having a dedicated 90W per channel in an external amp doesn't seem like much of an upgrade. If it was like 150W per channel then it would seem like more of an upgrade. But please correct me if I am wrong.

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Feb 09, 2024 03:47 PM
47 Posts
Joined May 2023
CyanPencil1105Feb 09, 2024 03:47 PM
47 Posts
2 Qs:

1: Will this theoretically run 2 channels at 135W rms (8ohm)? Is it that simple?

2: Any issue with using center channel to run to my speaker level signal inputs to my subwoofer? Doesn't seem ideal, but I know it's perfectly acceptable.

Thank you
Feb 09, 2024 03:51 PM
666 Posts
Joined Aug 2006
SD1085Feb 09, 2024 03:51 PM
666 Posts
Quote from dtdfusion :
Anyone uses these to drive shakers?
I had that thought too. I'd imagine it could handle whatever shakers you throw at it.
Pro
Feb 09, 2024 03:53 PM
12,624 Posts
Joined Jul 2010
supermanrob
Pro
Feb 09, 2024 03:53 PM
12,624 Posts
Quote from SD1085 :
Here is what the website shows.

https://manuals.denon.com/avrx370...iobdpg.php

This is a new realm for me tho, so I'm not totally sure what to look for in the settings.

That said…I did order the 7 channel. I'm running a 5.2.4 system now Front speakers are Monolith T6 Towers, which are not very efficient (4 ohms, 87.8dB sensitivity). I see they can be bi-amped, another thing I'm not well-versed on. But potentially I could use 4 channels for the fronts, 1 for center, and 2 for my side surrounds, leaving the Denon to power just the 4 Atmos speakers, which I'm sure would be light work for it.
Oh ok yes looks like it's not individual but can turn off just the fronts.
1
Feb 09, 2024 03:55 PM
666 Posts
Joined Aug 2006
SD1085Feb 09, 2024 03:55 PM
666 Posts
Quote from FNwoz :
Not a bad idea to just go 7. Most of my sound concerns come from the front. Rears and atmos are kind of whatever when it comes to powering them. Also don't forget whatever you preamp will allow the receiver to breath a bit more for those other channels. This is a no brainer at this price. Only if I didn't just order the Samsung S90C from the other thread haha. I do like monolith a lot. I have their subwoofer and it's fantastic for the price.
Yeah, that's my thought. Should allow for tons of headroom in the receiver, likely helping its lifespan too? Don't know, but I'm sure it can only help it. And I bet the Monolith will provide closer to rated power to the speakers than the Denon would have using every power channel it had.

I mentioned it above too, but my front LR are Monolith T6s from a deal last fall. Those are 4ohm, less than efficient speakers. I suspect they might love the additional power, and I think I'm going to look at bi-amping them too.

I had the Mono 12" sub too, until I went crazy with a pair of PSA 21"s. That's when things got real...
Feb 09, 2024 03:59 PM
666 Posts
Joined Aug 2006
SD1085Feb 09, 2024 03:59 PM
666 Posts
Quote from supermanrob :
Oh ok yes looks like it's not individual but can turn off just the fronts.
So this may be a dumb question...but based on what you said, can I still use the Mono 7 channel to power the front LCR and side surrounds? And let the Denon power the 4 Atmos?
Feb 09, 2024 04:00 PM
12 Posts
Joined May 2020
MaroonTerrier4937Feb 09, 2024 04:00 PM
12 Posts
Quote from rkoskier :
I have the same question. I have a 5.2.4 system powered by a Yamaha A2050 receiver that has 140W per channel when 2 driven, but I think that drops to like 55W per channel when 7 driven continuously (probably even less when driving all 9 speakers). They are pushing Polk in-walls that are 91db and can handle 200W in the front. I've always been happy with the sound, but I do wonder if I'm missing something that dedicated amps at even 90W per channel would provide for the front speakers. Or should I not waste my time with this Monoprice option?
IMO you are probably not going to get much from this specific upgrade. 91 is a solid sensitivity so those shouldn't need much juice to drive, and the A2050 is pretty beefy as far as AVRs go.

Without knowing which Polls you have, I'd say better speakers are the most logical path if you want a better HT experience.
1
Feb 09, 2024 04:27 PM
905 Posts
Joined Jun 2005
scraejtpFeb 09, 2024 04:27 PM
905 Posts
Picked up the three channel on ebay. Put in my watchlist and Monorpice offered an extra 5% discount, so just under $250. Discount for buying multiple too.

https://www.ebay.com/itm/37503850...SwVHxlu6tW

Will give my AVR an extra couple channels capacity to allow 4 channels ATMOS now.

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Feb 09, 2024 04:33 PM
3,705 Posts
Joined Oct 2003
elnino2783Feb 09, 2024 04:33 PM
3,705 Posts
Quote from sdschramm :
Is there going to me much of a difference compared to what a modern AVR can put out? Most AVR's can output anywhere from 75W - 125W channel and yeah when you're driving more then two speakers it will be on the lower side, but having a dedicated 90W per channel in an external amp doesn't seem like much of an upgrade. If it was like 150W per channel then it would seem like more of an upgrade. But please correct me if I am wrong.
There's a lot to unpack there, and I think the answer becomes "it depends on your setup"

If your speakers are really efficient at putting out sound, you can sometimes get away with less than 50W and they'll still get nice and loud.

My memory is pulling that info from old Hsu Research bookshelf reviews, where they apparently sound fantastic simply driven by the cheapo $50 amps you can find on Amazon that you might use in a garage/workshop setup.

That being said if you're buying receivers with pre-outs, with the intent to actually use them, I'd think you could benefit from any amount of additional amplification, especially if your room and speakers can make use of it.
Feb 09, 2024 04:42 PM
1 Posts
Joined Oct 2023
EfficientRoom8297Feb 09, 2024 04:42 PM
1 Posts
Quote from Backhome77 :
This makes me wish I got the AVR one step up from mine that included pre-outs. If I did, I would have spent more money at purchase, and I'd be spending even more now on one of these. So I guess it's good for my bank account that I didn't. But still got a little FOMO.

Good deal if you can use it.
Recommended for use with CAA66 and MCA-66 to obtain line level outputs for zones without pre-amp outputs. Color-coded detachable 14-gauge snap connectors. Not for use with digital amplifiers.

CAS44/CAA66/CAM6.6 Adapter https://www.amazon.com/dp/B000J3M...b_ap_share
Pro
Feb 09, 2024 04:51 PM
12,624 Posts
Joined Jul 2010
supermanrob
Pro
Feb 09, 2024 04:51 PM
12,624 Posts
Quote from SD1085 :
So this may be a dumb question...but based on what you said, can I still use the Mono 7 channel to power the front LCR and side surrounds? And let the Denon power the 4 Atmos?
Not dumb but yes you can
1
1
Feb 09, 2024 04:57 PM
666 Posts
Joined Aug 2006
SD1085Feb 09, 2024 04:57 PM
666 Posts
Quote from supermanrob :
Not dumb but yes you can
Perfect. I suspected as much, but still trying to understand the pre-amp thing. I think this 7 channel will suit me well.

Now on to the room treatments though...
Feb 09, 2024 05:07 PM
225 Posts
Joined Nov 2016
harleybogeyFeb 09, 2024 05:07 PM
225 Posts
Quote from jazyje :
Is this only for TV?? I see no Phono inputs....?
These are Amps - not preamps or avr's
Feb 09, 2024 05:08 PM
24 Posts
Joined Jul 2016
nosaJ11C7Feb 09, 2024 05:08 PM
24 Posts
Keep in mind tweeters and midranges use very little power. You'll go deaf at 20w per channel. Of course the industry is more than happy to sell you way more power than you actually need 😉 Subwoofers and shakers do need the wattage, and also full range speakers if you don't have a low pass cutoff setup on your receiver.
Feb 09, 2024 05:09 PM
228 Posts
Joined Apr 2016
artibramuirFeb 09, 2024 05:09 PM
228 Posts

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

If you have inefficient speakers, a nice AB amp (like one of these) can solve problems like distortion, dropouts, overheating, and premature component death. If you don't have inefficient speakers--and you probably don't, unless you have vintage gear or weird hifi stuff--you probably won't be able to tell the difference unless you are cranking the volume very, very high.

My last home theater setup was all '90s Snell towers with big, overcomplicated, power-hungry crossovers. Low-end receivers could only barely drive the mains, and only at modest volumes. It actually killed two cheapish receivers. A nice Yamaha receiver was able to drive the mains fine but struggled with surround. It took a set of 80-100wpc class AB amps to properly drive it, and I must admit it sounded very, very good.

But then I needed a more space-efficient setup and replaced my speakers and amps with powered three-way monitors from Kali. The Snell/class AB setup had a beautiful musical quality that I loved, but I actually prefer what I've gotten out of the Kali monitors. It's also way cheaper, smaller, more compact, takes DSP better, doesn't require attention to ventilation...

tl;dr most speakers don't need this, and if yours do, you still might be better off just changing speakers. But it's all subjective, home audio is should be fun, have fun with it.
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Feb 09, 2024 05:29 PM
24 Posts
Joined Mar 2017
graytoppFeb 09, 2024 05:29 PM
24 Posts
Quote from sdschramm :
Is there going to me much of a difference compared to what a modern AVR can put out? Most AVR's can output anywhere from 75W - 125W channel and yeah when you're driving more then two speakers it will be on the lower side, but having a dedicated 90W per channel in an external amp doesn't seem like much of an upgrade. If it was like 150W per channel then it would seem like more of an upgrade. But please correct me if I am wrong.
I think this is a great deal for what you're getting, but this is not going to be useful as an addition to an AVR for most people. First off, unless you're getting into the solid mid to upper tier AVRs (think Denon 3000 series), they don't even have pre-outs to be compatible with this. And when you get to that level those AVRs are going to be pretty capable of driving your speakers.

While this may be able to get you 2 or 3 more decibels that a a Denon 3800, it's going to be most useful for someone who has a good preamp/processor with no external amplification . They are somewhat rare, but Marantz makes a few and so does Monolith (google preamp/processor).

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