M&O MOOH-BE00BT - Beryllium Acoustic

General Information

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New Head-Fier
Pros: Comfortable Fit
Apt-X Bluetooth Codec
Smooth, Warm Midrange
Cons: Unintuitive Controls
Generic Design
Lacks Detail
This review was originally posted on hifitrends.com

If you say you have never heard of M&O Electronics before, I would surely understand, because I am just making their acquaintance myself. I first heard about the MOOH-BE00BT Beryllium Acoustic Bluetooth Headphone in the Head-Fi forums, and they sounded interesting, so I requested a pair to review.

M&O graciously offered to send me a pair to check out, in exchange for a fair-minded review. That is what follows.

The MOOH-BE00BT sells for $129 on Amazon, and its claim to fame is a 45mm diaphragm made with “Beryllium Acoustic Technique” which I can only surmise is a driver made of Beryllium Foil.

This element has become the material du jour for several new headphones on the market, sourced for its combination of both stiffness and lightness, something highly sought after when designing a diaphragm. This is supposed to allow the driver to move fast with less breakup, thus reproducing the sound spectrum with less distortion.

Build Quality:

The MOOH-BE00BT headphones have a rather generic all plastic design, which to me looks a lot like the current Bose Bluetooth headphones, but nowhere near as refined. They will definitely win no design contests. I also wish the light grey logos on the sides of both earcups were a matte finish to blend in with the color of the headphones, or just a tad bit smaller.

Despite being mostly plastic, they seem pretty sturdy with the exception of the adjustment arms which are pretty thin. However, they are reinforced with a steel headband arch that forms the backbone of the headphone. This spring arch also provides the light clamping force that holds the cans steadily on top of your head.

Stability is also aided by the plush faux leather earpads which felt very snug yet comfortable around my ears. They also do a very good job of passive noise reduction. When I had them on with music playing, I heard very little going on around me, so they are probably not the best choice for walking around outside. There is also a cushioned faux leather wrap at the top of the headphones, which felt very comfortable resting on top of my head.

The only issue I had regarding comfort was the heat caused by the big cushioned earpads. If it was the least bit hot when I had them on, my ears sweat like crazy. But that is not isolated to this product, and I still listened to them for hours on end with no major discomfort.


Like I said in the beginning, the MOOH-BE00BT’s main claim to fame is their stated Beryllium Acoustic drivers, which aim to provide a crisp, detailed, sound and they are successful to a point. (I’ll talk more about that in the Sound Quality section)

They also include support for the apt-X Bluetooth codec, which offers “near CD” quality if your source (most likely a smartphone) supports it, 32 hours of playback time at 80% volume, and supposedly some type of echo cancellation/noise suppression during phone calls. I made a couple of Google Hangouts calls with them and was able to have a conversation without any difficulty on either end.

Another feature listed on the box is an automatic shut off that kicks in after 5 minutes of no connection to a Bluetooth signal. It worked, but I had to first unpair the headphones using the Bluetooth menu on my phone, completely shutting down the connection to make them do so. When I just stopped playing music and accidentally left them on for about an hour or so, they never shut off. Several of my other Bluetooth headphones will shut off automatically simply by not playing music for a certain period of time.

This is preferable because most people don’t unpair their headphones from the phone when they are done using them, they usually just turn the headphones off using their on/off button. So if you forget to press the button, and forget to unpair them from the phone, they will just stay on until the battery dies. Or until you walk out of range and the signal disconnects.

My other bugaboo with these headphones are the controls. They are not intuitive. Three buttons on the right earcup control volume, power, and playback, and since they are all the exact same size and shape, it is very hard to tell which one you are pressing. Several times while using them, I pressed the volume up button trying to press the play/pause button, which was a little annoying. A little bump or indent on the center button which controls the power, Bluetooth pairing, and play/pause would go a long way.

The other two buttons aligned to the top and bottom of the center button control volume with a single press, and then track forward/back with a press and hold. This double function setup is not my favorite, but the buttons are very responsive and I had no problem switching songs or adjusting the volume.

As far as accessories go, the MOOH-BE00BT comes with a slim hardshell case that is the perfect shape to slip into most backpacks or messenger bags, a charging cable and a 3.5mm headphone cable for wired operation. The earcups swing in 90 degrees to lay flat in the case, and the case has an elastic band to hold the headphones in. Update: M&O just sent out a warning out to users stating that the elastic band should be cut out of the case since the tightness of the band can cause the hinges to break when inserting or removing the headphones. I didn’t experience this, but if you have a pair that has broken due to this problem, M&O is promising to replace them.

Bluetooth 4.0 ensures quick pairing, and really good battery life, with a charge lasting for several days as long as you don’t forget to turn them off. If the battery runs out, you can connect the supplied headphone cable to the bottom of the left earcup and use them without batteries. Charging is achieved by plugging the included USB cable into the micro USB port on the bottom of the right earcup next to the control buttons.

Sound Quality:

Now let’s talk about the sound, which is decent for the $129 price tag. I have yet to hear a Bluetooth headphone under $150 sound anywhere near world class, and these are no different. However, if you are looking for a budget set of over-ear Bluetooth headphones, these have a warm and friendly sound that lend themselves to long listening sessions.

I tested them by pairing to my LG V30 smartphone, which is apt-X compatible, and played a combination of Hi-Res music files and Tidal Hi-Fi streams.

When I listen to headphones, I have a certain sound sig that really appeals to me, and it’s pretty similar to what I listen for in speakers. That is a somewhat open, forward midrange, with a slight bass bump, and slightly rolled off, yet detailed highs. If you have heard the Bowers & Wilkins P7 Wireless, I consider that to be almost the perfect sound sig for Bluetooth Headphones, even though I feel like the bass can be a little bit too lively at times.

In comparison, the MOOH-BE00BT sounds darker with a soft rolled off treble, and boomy bass, but they are anchored by a warm, sweet midrange. They are a little thick, with a veil across the sound spectrum, but the overall smooth sound makes them very easy to listen to for long periods without fatigue. If you like a really bright, sparkly and forward sound, you may consider the sound to be too dark.

I compared it to my favorite Bluetooth headphone in the $100-$150 range, the AKG Y50BT, and while it had more top end detail and better controlled deeper bass, I actually preferred the more forward midrange of the M&O headphones. The AKG was a more lively listen overall, with more sparkle in the highs, and deeper, more detailed bass, but the sweeter mids of the MOOH-BE00BT headphones made me want to listen to them longer. Neither had much in the way of separation or imaging, but I find that par for the course at this price level. The mids of the M&O product made them sound a tad bit more open than the AKG, and it presented a decent soundstage for a headphone.

When I connected the MOOH-BE00BT to my phone using the wired connection and turned on the LG V30’s Quad SABRE DAC, the sound got a little better, with the veil lifting a bit, and the bass getting tighter. The treble also seemed to be a little bit more prominent. In the wired mode, I would say they actually sounded quite neutral, probably due to the absence of coloration from the bottom end. They still lacked much separation between instruments, but I enjoyed the slightly higher resolution.


If you can get past the far from unfashionable, generic look, the MOOH-BE00BT have a comfortable fit and a warm, smooth, fatigue-free sound that’s easy to listen to for long periods of time. It’s a good non-offensive sound which is not the last word in detail, but there is enough there to provide some excitement.


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New Head-Fier
Pros: Comfort, Sound, Warm Presentation, Deep Bass, Clear Mids, Smooth Treble, Great Battery Life, Good Bluetooth Connectivity
Cons: Treble could be brighter/more detailed for critical listening sessions
Disclaimer: I would like to start this review by stating that this headphone was given to me at CanJam 2018 for review for free. I would like to thank M&O electronics and Tom Wang for this headphone, I have no affiliation with M&O, and this review will be as non biased as possible, so as to give an honest review about this audio product.

Now with that out of the way, the M&O Beryllium Acoustic Bluetooth Headphone, or MOZero is a high end Bluetooth headphone currently priced at $129 at the time of writing this review. The headphone comes with a carrying case, charging USB cable, and 3.5mm male to male cable for connecting the headphone through a wired connection to any device with a 3.5mm output.

Build Quality:
The headphone is an all black plastic design except for the logo which is grey, and with metal in the slide adjustments. At $129, there is nothing I can really complain about when it comes to build quality, as its made extremely well at this price point and feel like they can take a beating. I would like to see more metal in the build, but for what it is it is very good.

I have a very big head, with very big ears, so with both of those factors, finding headphones that are comfortable (and just fit in general) is a bigger challenge for me. I can safely say that for those with giant ass heads out there like myself, this headphone fits, and is very comfortable. The ear pads on the headphone can fit my ear entirely, and there is a good amount of padding in the headband so that I can wear this headphone for hours.

Bluetooth and Battery Life:
The Beryllium Acoustic Bluetooth Headphone comes with aptX and has a battery rated to last 32-35 hours. While using the MOZero with Bluetooth, I encountered no hiccups or disconnects and as for battery life, I have used the MOZero in both wired and Bluetooth mode, so I have not fully tested the battery life, but since I have had it to the time of writing this review, I not had to charge the battery, so I would have to say that battery life appears to be strong

Sound quality:
Now for the sound part of this review, how does the M&O Beryllium Acoustic Bluetooth Headphone actually sound? It sound great for a Bluetooth headphone. It has a warm and rich sound, with a smooth top end. The bass is strong and has a nice thump to it, making it good for EDM or dubstep, but not overbloated or boomy. The midrange is clear and pretty much perfect in terms of placement. Its not too recessed and not too forward. Vocals come in clear and with detail without being shouty or sibilant. Treble is nice and smooth, perfect for people who can sensitive to higher frequencies, and it has some detail and air, but not a whole lot, and this would be my only complaint, as I would like a bit more sparkle and detail, as one of my main headphones is the BeyerDynamic DT-880 so I am more used to a brighter sound signature, although given this is also to be used on the go, it is good that the treble isn't so bright, as when the user turns up the volume the treble won't get piercing to the ears and damage hearing as much. During listening tests I used it in both wired and Bluetooth mode, and both are very good, although I did notice the treble was better when in wired mode, just wanted to point that out.

Final Thoughts:
The MOZero ticks almost all the boxes in what I want in a portable headphone. It is comfortable, built well for the price, and sounds very good, although lacking a bit in the detail. This is now my Bluetooth headphone of choice for when I'm out of the house not using IEMs. Great work M&O Electronics.

Amazon Link:https://amazon.com/Beryllium-headphone-high-speed-propagation-well-balanced/dp/B071HXD5RV/
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Dobrescu George

Reviewer: AudiophileHeaven
Pros: Dynamic sound, Engaging Sound, Comfort, Price, Good Bluetooth Connection, APT-X abilities, Good battery life, Nice Bass, Build Quality, Dark Sound, Laid Back Sound.
Cons: Clairty is Average, Soundstage is Wide, But Instrument Separation Is Not Best, Smooth Sound, Treble Is Slightly Rolled-Off Too Early, Dark Sound, Laid-Back Sound.
MO Electronics - MOOH-BE00BT - Bluetooth Fun

MOOH-BE00BT, or MZero as we'll name it throughout this review for the sake of being able to write the review, is an amazing headphone at just 130$, which has beryllium drivers, and APT-X Bluetooth abilities.

MOOH BE00BT can be bought here: https://goo.gl/SezPzV


MO Electronics, the company behind MZero is not known at all. In fact, I had no idea who they were and what their product was before reading about it and before a company representative approached me. At the moment of writing this review, the official website doesn't look very good, and many artistic assets look quite old and misplaced, so I gathered more information about MO Electronics before I started writing this review.

I studied their interaction with their customers, and read a lot more about MO Electronics to be able to say that they are a good company with healthy ethics and a good customer support in the long run. It can be hard being a newcomer to the audio industry, but if they keep up the good work, I think MO electronics will be able to gain a lot of traction with audiophiles form all over the world. It should be noted that at this moment you can only buy MZero in USA, and they are not available to the rest of the world, but they have plans on including worldwide shipping soon.

It should be noted that I have absolutely no affiliation with MO, I am not receiving any incentive for this review or to sweeten things out. This review is not sponsored nor has been paid for by MO or anyone else. I'd like to thank MO for providing the sample for the review. The sample was provided along with MO's request for an honest and unbiased review. This review will be as objective as it is humanly possible, and it reflects my personal experience with MZero / . Every opinion expressed is mine and I stand by it, the purpose of this review is to help those interested in MZero find their next music companion.

About me



First things first, let's get the packaging out of the way:

Mzero is packaged nicely in a medium-sized white box, with a beautiful render on the outside. They keep mentioning the fact that they have large beryllium drivers, which is a key to their sound. The main box they ship Mzero in is filled with a nice material to keep them from harm as well.

The headphones come in a pleather hard carry case, of very good size. It is very ergonomic to keep them in a backpack, while they are in their case. Within the case you can find a proper cable for connecting them to a single-ended 3.5mm source, along with USB cables for charging them. Since MZero are Bluetooth Headphones, you can use them in combination with any Bluetooth capable device, and what is really nice, is that they also work with APT-X capable devices.

The carrying case is quite nice all-around and it offers enough protection for MZero, and the number of accessories included is enough to make best usage of them. While other headphones also come with spare pads, and other extras, we're talking about a 130$ Headphone, so the number of accessories is more than okay for this price range, many sub 200$ headphones not coming with carry cases and other extras.

What to look in when purchasing a pair of Bluetooth Headphones


Technical Specifications

Build Quality/Aesthetics/Fit/Comfort

MZero comes with a good build quality, being made out of hard plastic, and their are pretty resistant to scratches. They have a nice shape to them, and while they maybe won't catch anyone's eyes with an excentrique look, they won't make anyone dislike them either, having just the right balance of style, playfulness and elegance in their design to balance them. They have the company's logo on the outside, thing which is quite nice, as it has a nice shape and design.

The cups can move a bit, and they can swivel, thing which is instrumental to their storage. The headband can be adjusted so it better fits the wearer, the headband is padded nicely, and it is quite comfortable, even for long hours of usage.

The earpads are some of the better pads out there, being quite soft, offering an excellent contact with the ear, being medium in size, and while they don't quite cover my entire ear (I have pretty large ears), they are large enough to feel comfortable. My girl has much better comfort with them than I do, wearing them for hours each day. I am most intrigued with how soft and nice to the touch those pads feel, being better than any pads I had in this price range.

The build quality seems pretty stable, they don't creak after usage, and I can't say I noticed any wear on them after two months or so. The pads didn't start to wear or anything like that, even after they've been using daily for a few hours per day.

The Bluetooth connection works well for me in APT-X mode, I am very content with the sound, and while it is possible to tell the bluetooth apart from using FiiO X7mkii + AM03A for driving them, I don't think that the difference is large enough to justify using the cables, especially if using them portably, while out and about.

There's some call abilities for Bluetooth, but we didn't explore any of those in depth. When we made a call, the person on the other end could hear us nicely, and we could hear them, but that's about it. Voice came out clear and tonality in voice was clear, but there was some parasitic noise on their end, with a bit of delay from the BT connection.

The bluetooth control buttons seem to work just fine with any DAP we paired them with, including with our smartphones like Xiaomi Mi Max 2, and the bluetooth experience has a very nice overall feeling, with very rare to no dropouts.

You can change the volume via clicky buttons while they're connected in Bluetooth mode, and those are some of the headphones we tested that go very loud, and loud enough, when connected via Bluetooth. We consider this to be an important aspect, as we like to listen loud, and most BT headphones are usually way too quiet for our enjoyment, MZero surprising us in this sense.

In the long run, they are a 130$ product which feels nicer than its price warrants it, the looks are elegant and practical, and for the most part the build quality is very good, better than their price tag says they'd be.

Sound Quality

When it comes to their sound quality, this is the reason they have been used every day. First, let's start with the Bass. Then there comes the bass. And lastly, the bass.

Don't misunderstand my words, those headphones aren't basshead headphones necessarily, but they have an amazing bass, with excellent textures, quantity of bass, and extremely nice rumble and tactile feeling to it. The bass extends quite low, with nice depth to the sub-bass and with an interesting presentation.

The midrange is organic and sweet, being colored by the bass into having good weight to each musical note, and quite a nice engaging presence. They are quite natural and the whole midrange is quite enjoyable in the long run, but it isn't the clearest out there, being rather warm and a bit crowded. The general tonality can be dark and laid back, especially when compared to a true neutral headphone / IEM.

The treble is recessed when compared to the midrange and the bass, posing a little issue for those seeking the ultimate clarity, as it rolls off considerably early, and provides a rather limited listening experience for rock and metal music, which relies quite a lot on cymbals and cymbal energy. It should be noted that the treble reaches around 9-10kHz. We tried to Equalize the treble, but playing with the 16 kHz slider on our EQ makes only a small a difference, and the 8kHz slider on our EQ makes a larger difference, but it makes the treble a bit hot if enhancing it too much, the treble smoothness / roll-off not being equalizable.

They have a fairly dynamic sound, which makes up for the disadvantages presented earlier, making them a bassy, dynamic and rolled off headphone, with a clear enough midrange to be fun. They should be nice for those who like a delicious bass, and a fatigue-free sound, being intricate enough in the bass department that they are a kind of guilty pleasure, especially when you combine the sweet bass with their comfort. Pop, Electronic music, Rap, Hip-Hop, and Bass-centric music will sound sweet, while Rock, Metal, acoustic doesn't have enough treble to sound its best. This being said, I wish they made another headphone with this bass and more treble, along with a clearer midrange.


The soundstage is fairly good for me, but not quite that impressive overall (especially after hearing many other flagships), being well extended in width, but they have a limited instrument separation, bass, guitars, synths and most instruments / voices going over each other a bit too easy, with the cymbals being not enough audible, and a tad scattered. While electronic music will sound nice on them, metal music will take a hit due to the limited instrument separation, and so will most acoustic and Jazz music.


The ADSR/PRaT characteristics are fair for the price range, a bit on the slow side. Textures are resolved fair for the price range, but the musical note decay is slow, while the attack lacks impact at times.

Portable Usage

Here comes a strong positive, as MZero is ultra portable. They are lightweight, the clamp force and clamp angle is just right, and they don't cause any weird noises while being worn and walking. They are bluetooth enabled, with APT-X technology and they have around 32 hours of stated battery life (we didn't measure this since we used them mostly wired), and they are quite comfortable.

The Bluetooth Connection is stable and stays stable without many sudden dropouts, APT-X being a very nice addition to this. The connection stayed stable in a 2-hours walk around Bucharest, and this alone says enough about the quality of the bluetooth receiver.

Listening volume can get really loud through Bluetooth, which we consider an amazing plus, and the bluetooth buttons seem to work just fine with any device we paired them with.

They are also easy to carry around the neck, if one has to answer a phone conversation and was using them wired, the cable included is just the right length and is quite flexible, but charging their batteries takes a while, around 6 hours from empty to full.

All in all, MZero has a very nice portable usage and makes a good phone to take on the road.


MZero vs iBasso IT-01 - Starting with the bottom end, both have excellent extension, but IT-01's bass doesn't bleed in the midrange, while MZero's does get a bit in the midrange. IT01 has better musical note articulation and definition, along with better instrument separation, while MZero is smoother and rolls off a bit early in the treble.

MZero vs Westone UM1 - The sonic signature is fairly similar between the two, but UM1 is a IEM, while MZero is a Bluetooth headphone with a hand more functions. The comfort is great on both, and the small size of UM1 is an advantage, but MZero is quite portable as well. The treble rolls off a bit early on both, both are laid back and relaxing, and both have a very nice bass. UM1 might have more bass and sub-bass, while MZero has a better midrange and especially vocal clarity.

MZero vs Westome WX1 - The sonic signature is similar between the two, with WX1 having a somewhat better treble extension, with better instrument articulation. MZero has a longer promised battery life, and while they don't have the MMCX Bluetooth cable that comes with WX1, they have an excellent volume while used in Bluetooth mode, MZero being probably the only headphone we heard so far that can get this loud on a Bluetooth connection.

MZero vs Sony MDR-XB650BT - Sony has better extension in the treble, and a tad more bass amounts, but MZero has more clarity in the midrange and is more dynamic, and much more comfortable, being an over-the-ear design, while MDR-XB650BT is an on-ear design.

Value and Conclusion

MO Electronics MOOH BE00BT is a headphone you surely need to consider if you want an 130$ Bluetooth Headphone that is comfortable, has great bass, and a very smooth and relaxed sound, albeit with a somewhat recessed and rolled-off treble.

There are some concerns over the sonic quality of MZero, like the lack of details and the fact that they are a tad boomy or that the bass bleeds in the midrange, but placing things in perspective, they are some of the most comfortable headphones I found at the 130$ price range, and even I have used them quite a lot, my girl as well, they are very enjoyable "fun" headphones that will never offend anyone. While not being the most clear headphones, they are clearly very enjoyable and engaging, providing a fun overall sound and feeling to those in need of a comfortable headphone. Taking them with you at work, or taking them on a walk is not going to be an issue, they isolate fairly well from the outside noise, and they provide a rather good sonic performance for their price range.

We are sure that a large part of their 130$ price tag was invested in including the bluetooth module, the batteries for that, the rather comfortable earpads, the construction quality. The sonic quality, while not absolutely left behind, had a bit to suffer. In the long run, we'd be happy to pay a little more for better sonic clarity and for a better treble extension, MZero having an excellent shape and comfort potential. For somebody who wasn't spoiled by much more expensive headphones, those can be a crazy-fun experience as they are quite dynamic and combine well with electronic, pop and bass-driven music.

If you're looking for an 130$ headphone with a nice bass and a good overall sound, we think that you'll love MOOH BE000BT, and that you can hardly go wrong with a headphone at this price, especially if you are into smooth , dark, and relaxing sounds. You won't get the best resolution out there, but you will get lots of fun and enjoyment from the experience, and they live to be what they promise to be, a good deal at their price point, with APT-X Bluetooth and fun bass. We didn't experience better APT-X Ove-The-Ear 130$ Bluetooth headphones yet, even less, so MOOH-BE00BT are some of the best headphones we tested at their price point, despite all the minuses we mentioned. If you're curious to get them, you can rest assured that MO Electronics was of help to customers before, and that despite their older-looking site, they are quite professional in their work. MOOH BE00BT should remain in our minds as a fun headphone that is worth 130$, and does a good job for its money, coming with a hand of features that might come in handy to you.

I hope my review is helpful to you!

Stay safe and remember to always have fun while listening to music!

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Link to the review on Audiophile-Heaven: https://audiophile-heaven.blogspot.ro/2018/02/mo-electronics-mooh-be00bt-bluetooth-fun.html

Link to the official Thread on Head-Fi: https://www.head-fi.org/threads/mooh-be00bt-official-thread.867920/



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