UM Universal MEXT


















I did buy the UM MEXT as a "Like New" item from Andy not long after getting the Shuoer EJ07M HBB Kinda Lava edition, as the price was just so tempting and I had my eyes on it for a long time now. My order also had the new Liquid Links Conti that I got as an upgrade cable to the EJ07M, but I now use it with the MEXT.
The MEXT is a very worthy IEM, mostly as for me it does retain very high SQ with awesome clarity and definition while having that physicality in the bass department thanks to the Bone Conduction driver implementation (and let me say that I am not claiming to be an audiophile, but just an audio enthusiast that gradually got dragged into this rabbit hole of a hobby ;) , so please take my technical comments with that in mind). With that being said, I did get a little issue with my like new item, as I was experiencing a slight channel imbalance, as well as difference in the tightness of the 2-pin connections (one too tight to my liking, and the other one too loose). I therefore contacted Andy that directly agreed to get me a replacement free of charge (shipping back my item was also covered). So top-notch customer service here, thank you to Andy for both his responsiveness and level of support. But that does stop here, while my item was getting shipped back, MusicTeck put the MEXT to a lower price brand new as part of a sale, and I thus contacted Andy to ask if it would be possible to receive a "New" version for my replacement as the price was now the same as what I paid for my "Like New", and he agreed to it! I am very happy to say that my new MEXT is now working perfectly, and I am enjoying it a lot through my Cayin N3Pro and also xDSD Gryphon, rediscovering some of my well-known music with even higher levels of enjoyment. So I want to say a BIG thank you again to Andy, as I am very grateful to him for doing his utmost to take care of his customers with a level of support that is just unmatched.
The overall tuning feels flawless to me. The soundstage is very 3D with impressive width and height. Mid-bass has satisfying slam, and the sub-bass is the star of the show: textured, detailed, and full of rumble. The mids are lush and smooth with slightly forward vocals that never overshadow other details. Both low and upper mids carry enough weight to keep vocals sounding full-bodied.
Treble is airy, well-extended, and detailed without being fatiguing or overly bright.
Huge thanks to Leo and Andrew for the work they put into this set—it truly stands out.
I still remember the first time I heard Canpur 622b and was completely smitten with the intoxicating mid’s and sparkly but dry treble. The bass had nice texture but was a bit lackluster, a bit too rounded and lacking extension. The mid’s stole the show and at this time I was very focused on engaging mid’s and warmth over all else. Since then, my tastes have evolved and the first few minutes of listening to Canpur’s latest flagship the 752b I knew I was going to fall hard for its sound as it hits very very close to my current preferred taste. Engaging, clear, hint of warmth, extended and resolving treble, spacious and resolving mid’s with a supportive deep hitting bass. My only negative is the lack of DD bass timbre, decay and slam.
The Canpur is insanely detailed and technical. It literally just pours out information in the most liquid way possible. No shout, no fatigue. A huge open stage with notes that seem to float around you. The tonality is a bit more dry than textured throughout the FR but not to its dismay, it works for the tuning very well. To quote @aaf evo “Ugh I love 752B. Idc if this sounds like 3 year old water it’s the tastiest stale water of my life” I love this statement because…well…its funny but more so because it so accurately describes how I also vibe with the 752b. Or another way of saying it in more romantics terms, is that 752b is luxuriously refined. It works very well as an all rounder for me.
Bass is not the star of the show here but it also does not take a back seat. The bass is very satisfying, deep and rumbles nicely when called upon. Although you will not feel the push of air like that of a Dynamic Driver or hear an earthy timbre. It does still fill the head with nice reverb that is not distracting.
Mids are naturally distanced with plenty of space around each instrument/voice. Imaging and layering is spectacular here and nothing ever feels even the slightest congested or smeared. The stage is quite spherical, to my ear equidistant in all directions out of the head. Notes are not dense but more dry, light with super sharp transients from edge to edge of notes. Notes seem to float instead of feeling anchored. They float in there correct places with great stage structure. My only teeny complaint is the timbre of vocals and acoustic guitar can sound a bit thin at times. It’s not a deal breaker as it’s not to the point of being annoying. However it is how I hear it.
Treble is very resolving, layered and extended. There is a very occasional peak but for whatever reason it doesn’t come across fatiguing or piercing, to my ear I hear it like a very pronounced sparkle. The treble isn’t as dry sounding as it was on 622b and it is much better extended than that set as well. It still has a dryness to it but also a nice thick outline to the notes with defined edges.
The Dynamic range is also wonderful. Macro and micro dynamics swing with ease and shift in accordance to the music playing. Every nuance is heard. Imaging reached 3D holographic levels. This is true Summit techs. It is extremely immersive and even at low listening volumes nothing is compromised. 752b is so easy to drive as well. I used both the Quloos MUB5 and Ibasso Dx340Ti, both work very well for 752b. The 340Ti having better treble res while MUB5 offered a slightly richer tonality.
The 752b has really taken me by surprise, I held off on purchasing it for awhile as I thought it would bore me or become too much over long listening sessions but both could not be further from the truth! It has truly captivated me and is in good complementary rotation. Going to Fulgrim from 752b reminds me why I love the Fulgrim and going to the Asteria from 752b again reminds me why I love the Asteria and vice versa going from each of those to 752b reminds me why I bought the 752b and have fallen hard for its sound
Sounds great on iems and headphones. I find this pairs well with extremely low impedance iems, especially for bassheads.
The A&O Omega is a beautiful piece of art. The design, the premium drivers, the cable…all top notch. In today’s day and age, an IEM this special under $3k is significant. Before I get too far into this, it is best to throw a neutral/natural source at the Omega. Something overly warm will leave you missing the higher-end technicalities that it can produce. While it doesn’t HAVE to have a lot of power, something that gives plenty of headroom will benefit the Omega, and your listening enjoyment. Basically, just remember that synergy is king…doesn’t always have to be the most expensive source kit to get the most out of a higher end IEM.
The tonality is full, with a warm tilt. I hear no edginess or sibilance regardless of where the switches are. The bass is just spectacular. If you, like me, had a romantic inclination towards something like the Legend X (or Evo), this is a wonderful upgrade from that general category of sound signature. It evokes the same emotion to me as the X did back in the day. I’ve had the chance to trade with friends a couple of times and just can’t imagine enjoying anything more without breaking my bank with the Fulgrim. Don’t hesitate to give the Omega a try.