Monolith M565C Closed Back Planar Headphones

General Information


  • Model: 29514
  • Style: Closed
  • Transducer Type: Planar magnetic
  • Magnetic Structure Asymmetry: Asymmetry push-pull neodymium
  • Magnet Type: High grade N50 neodymium
  • Driver Size: 66 mm
  • Maximum Power Handling: 2 Watts (for 200 ms)
  • Maximum SPL: >120 dB
  • Frequency Response: 10 Hz ~ 50 kHz
  • Total Harmonic Distortion: Less than 1% at 1 mW; 1 kHz
  • Impedance: 18 Ohms
  • Efficiency: 96 dB / 1 mW
  • Optimal Power Requirement: 1 Watt
  • Weight: 13.7 oz. (389 g)


Latest reviews


100+ Head-Fier
A solid & beautiful pair of closed back planars with a good price.
Pros: -Pleasant and non fatiguing sound signature.
-Solid build quality and beautiful design.
-Portable lightweight planars.
-Bang for the buck.
Cons: -Forward mids might put off some people.
-Bad cable with microphonic noises.
-Earpads are small and might be unconfortable for big ears.
Before I start, I want to say that this is my first review here. Im not an expert, just a guy who has been enjoying and playing music all his life. Also, english is not my first languange so I apologize if the review doesn't meet the standards of this forum.

First a bit of a background. I already got some decent headphones (Hifiman Deva, Sennheiser HD600, Verum one Mk2, Fidelio X2HR, Fiio Fh3, Audio Technica MSR7B among others) but I was looking for a pair of closed back planars.
I wanted a different sound signature than the mentioned above and was looking for something with a bit more forward mids.

I made some research and there wasn't too much options for closed back planars, so my final list had the Monolith 565c& 1060c, the Oppo pm3 and the Audeze Mobius.
I quickly discarded the Oppos because they were expensive and hard to come by in Spain. Did the same with the Mobius because you cannot bypass the amp to use them wired.
Finally I ended up choosing the m565c because the M1060c was too heavy for my liking.

Looking on the internet I was surprised by the lack of reviews for the m565c, apart from the review here ( which I agree pretty much with it), and a few short videos on YouTube.

I decided to take a gamble and order them for 170 euros from a well known spanish audio store.(they were a bit cheaper in the Monoprice Europe store but they were out of stock).
After 2 days with them and some long listening sessions I must say that Im glad I did.

-The package: 8/10.
First impressions are really good. The Monolith M565c is presented in an attractive black box with glossy finish and got some weight to it .
Once you open it, you find semi rigid carrying case, which is isnt that hard but would be enough to carry them without problem in normal situations. It might not be the best case if you are going to put some pressure on it. Besides that, the overall package it's adequate for the price and even better than others 200+ headphones that I've seen.



-Build quality and comfort: 8,5/10.
These really surprised me in this category. Not only only because they are beautiful in person, but because they are really well made and sturdy without being heavy.
The wood cups are gorgeous and got a really nice finish.



I've read some complaints about the headband but I must say It's good. The padding is soft and the headphones sits nice in my head without any problems or discomfort after +3 hours sessions.
Clamping force shouldnt be a problem for most heads (I got big one).

In the other hand, the pads are not very big. I have medium size ears and they don't have too much room left but that doesn't make them unconfortable for me. People with big ears might have to look for the bigger brother (M1060c).

The worst part is the stock cable, which is a dual 2,5mm connectors to a 3,5mm jack. It feels ok but has microphonics noise every time you touch it, so an aftermarket cable is mandatory in my opinion. (Can get decent ones in AliExpress for 20 euros or so).
The other guy who reviewed them here must have gotten a different cable with his unit because he said there was zero microphonics on his cable.

Sound: First impressions were really good. Overall they got a pretty ballanced sound with a boost in the mids. Sound signature is a bit on the warm side but not at cost of detail.
Bass is present, and will be enough for most people. they might lack a bit of sub bass and the slam of other planars, but if you aren't a basshead it's more than enough. Best thing is that the bass doesn't bleed to the other frequencies and the sound is pretty clear.

Mids are really forward , especially the high mids, this might put off some people but I was looking for that because some of my headphones got recessed mids. Anyways I think these make a really good job with the mids.

Highs got just the right amount of sparkle. No harsh or significant sibilance. Althought they can't compete with the treble detail and quality of other planars like the ones from the Hifiman midrange line.

Soundstage and instrument separation is good for a closed back headphone, nothing special tho.

They have pretty decent isolation but they are not your pair if your preference is noise cancelling.
They are also easy to drive. My Xiaomi Mi10 lite handle them without problems and I never passed the 40% volume level. The sound with the Btr5 and the Soundblaster XG6 improved a bit, becoming more detailed, especially with the last one.


Summary: All things considered, I think they are a great and overlooked pair of headphones. If you are in the market for a pair of closed backs with a pleasant and non fatiguing sound signature, look no further. They are not perfect by any means but I think theres plenty of room for improvements with Eq, change of pads and mods.
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These are under appreciated, for sure -- I pulled out mine out to listen to last night after reading your review. My only gripes are the nutty headband which allows way too much freedom of movement which can put the headphones in a pretzel, and the ear pads could stand be a little bit larger to accommodate my large ears -- but they are still miles ahead in comfort of the Audeze Sine, another closed back planar but the on-ear pads of which smashed my ears painfully.
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Yeah, I think these are really worth it. The headband design is a tricky one, I had no problem with it because Im only using them at home so far, but it's definitelly too flexible.
Totally agree on the earpads, the comfort isn't bad at all but could have been way better with larger pads. Ordered some earpads that a forumer recommended, I hope they have more room.
Thanks for reading the review and comment btw!
*Update: Yesterday I received a new gold plated cable for the Monolith M565c from AliExpress and it really improved the sound, now they have a bit more of bass and the Treble is way more defined and sparkly. I'll let the link to the cable below in case someone is interested.


Pros: Sound, isolation, build quality, relatively easy to power.
Cons: Smallish earholes, boosted upper mids sound good to me but might not be to everyone's taste.
Finally caved and bought these under-the-radar closed planars. I'm impressed! Can be found for around $200.

Good isolation, perfect for in my office cube. They blow away my other closed cans (ATH-M50X, Senn Momentum). Pretty similar to my Mayflower modded T20RP, but a high-mid boost reveals more detail. The planar sound is like a closed HE-400i, which I love. Better subbass, maybe less delicate and airy than the HE-400i, but very good overall.

Solidly built. The earholes are small - - think first gen Momentum over-ears. Fit me fine (big head, little ears), but ymmv. The headband hits right at the top of my head, which I don't like, but at least it's softer than the padded-on-wrong-side ATH-M50X. The pleather earpads get hot, but they are replaceable with that short velcro/command strip type stuff holding them on. The overall fit and finish is very nice with nice looking wood and a strong metal frame.

The cable is soft cloth, which I prefer to the hard plastic HE-400i cable. Zero microphonics. Each cup has a tight jack, no problem there and easy to go balanced if needed.

Powers almost loud from iPhone X, making these more efficient than HE-400i. JDS Atom makes them sing and seems to bring the bass out a bit, which tames the 1K boost.

These Monoprice m565c cans got "best everyday audiophile headphones" on Wirecutter, by the way! They also recommend Campfire, Final Audio, and Hifiman, to give you an idea of their tastes.
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New Head-Fier
I have to ask. With most of us buying the M1060C myself included has anyone gave these a try? Did Monoprice make a mistake by releasing these at the same time as their big brother? It would be a shame if these turn out to be the hidden gem that no one buys.



I have to ask. With most of us buying the M1060C myself included has anyone gave these a try? Did Monoprice make a mistake by releasing these at the same time as their big brother? It would be a shame if these turn out to be the hidden gem that no one buys.

I’ve searched everywhere and can’t find any reviews.


New Head-Fier
A review would indeed be very welcome! I'm thinking about buying these for work, afraid of looking like a moron with the m1060c