7Hz x Crinacle Zero:2 in Ear Monitor, Updated 10mm Dynamic Driver IEM, Wired Earbuds Earphones, Gaming Earbuds, with OFC IEM Cable for Musician (Without MIC, Silver)

This is a review for a combination of two products: the 7Hz X Crinacle Zero:2 paired with the TRN BT20 Pro - combined these two create a True Wireless (TWS) pair of headphones for under £50 total. Individually, both products will typically sell for £25 or less. I purchased these both as my first set of wireless buds but also to allow me to have replaceable wireless adapters in the event of battery failure or equipment damage. I would have preferred a product with replaceable batteries but these currently do not exist. The 7Hz X Crinacle Zero:2 has quickly gained fame as the second revision of a very high quality set of wired in-ear monitors (IEMs) for £25, considered the ultrabudget price bracket. There had to be some concessions at this low price point and unfortunately the sticking point for most people will be the provided removeable cable. For those unaware, the most common point of failure on an IEM is the cable, so being able to replace a damaged cable on an otherwise working product is very welcome and cuts down heavily on waste. Unfortunately the provided 0.78mm 2PIN cable is adequate in terms of sound quality but very tight on the connector - you will likely feel you're going to break the connector when initially inserting them. Once on however, the cable is held securely and is functional, if a bit spartan. Most people are probably going to want to replace the cable, and the Tripowin Zonie is an easy choice for this - make sure you get the 0.78mm 2PIN version if you do this. The provided tips were not tested, but match the previous Zero's tips, which I have tested in the past. These tips are functional, and if they work for you there's no need to look further afield. I, unfortunately, have very fussy ears that require specific tips. Fortunately I already had access to a spare pair so I simply used those instead. I had no issues whatsoever with fit with these IEMs, so it seems the 7Hz nozzle shape particularly agrees with me as I also had similarly few problems using the much more expensive 7Hz Timeless with a similar nozzle structure. Some people have reported problems wearing these IEMs due to their ear shape, however, so you may need to consider a different product if these are a bad fit for you. While I was waiting for my wireless adapters to be shipped I tried the product wired with an alternative cable and tips. It has to be said - the sound quality of these £25 IEMs is audiophile-grade beyond all doubt. If you have ever wondered what music and audio is supposed to sound like, these gems will tell you all you need to know. Clearly all the budget went into the drivers. They are particularly good at reproducing midrange tone and timbre in a way that much more expensive products often struggle with, so most anything you play on these will simply sound correct and accurate. This would be remarkable at any price - at £25 now there's no excuse - this is a PHENOMENAL quality floor to start from and everyone should try these at least once. It almost feels insulting to limit them to a lossy Bluetooth codec like I have! They also EQ like champions if you're still not satisfied, although I find a very subtle EQ is all that is required to suit my personal taste on these. However, they aren't perfect. While the Zero:2 has no problem reproducing any audible frequency well in isolation, from the lowest 20Hz thumps all the way to 20KHz (20000Hz) mosquito buzzes, reproducing them all at once as with regular use listening to music exposes some mechanical limitations of using a single tiny driver to do everything on its own - in this situation the low-end and high-end each get muted compared to how they should sound. They do not sound muffled, however - merely quieter than they should be in theory and very much still audible! You will hear clear meaty subwoofer-style thumps from these IEMs, you will hear intricate breathy high notes from these IEMs, but if you play a complex track with everything at once the midrange gets pulled forward very noticeably as the driver simply can't reproduce it all fast enough. This is still a dramatically better handling of a driver's shortcomings than with lesser products, so don't misunderstand - this is as graceful and distortion-free a handling of an overextended driver that you could ever encounter, and many of you might actually prefer a midrange emphasis anyway. It does mean, then, that there is room for improvement in much more expensive products - but not a lot! Most people reading this will be happy to stop with these, unless you particularly dislike a netural sound signature (where nothing is boosted nor surpressed in the mix). As a paired unit, the Zero:2 and BT20s work very well together overall, and over time this turned out to be a bit of a fluke. I keep finding that the left adapter slips slightly on the 2PIN connection when in use, exposing the pins by a millimetre, but this is easily checked for and corrected and did not affect the connection or sound quality in practice. I suspect this is more a problem with the Zero:2 than the adapters however and explains why the cable supplied with the Zero:2 is so stiff, but it's worth noting nevertheless. Ultimately, I consider this experiment a success. The 7Hz X Crinacle Zero:2 is a fantastic IEM, let alone a fantastic ultrabudget IEM, and you are highly likely to have an excellent time with it. If you want to go wireless with it, the TRN BT20 Pro is at the time of writing one of the few choices available to let you do so and is very affordable as well. They make a good, if not perfect, pairing and I am likely to get a lot of use out of these two!

Jeez, where do I even start? A couple weeks ago, I was that wide-eyed beginner scrolling Youtube for "best cheap earbuds under £50," blissfully unaware of the chaotic wonderland known as the IEM rabbit hole. You know the one: Graphs that look like alien hieroglyphs, endless debates on "Harman vs. V-shaped," and suddenly you're googling "sub-bass extension at 2 AM." I took the plunge with the 7Hz Zero:2 on a whim co-tuned by Crinacle, and paired it with the Jade Audio J11 DAC because, hey, why not add a little EQ boost? Spoiler: This combo didn't just save me from the abyss; it turned me into a full-blown convert. If you're teetering on the edge like I was, these are the gems that'll make you smile, nod, and hit "add to basket" without regret. As a total noob, the sound blew my socks off right out of the box. No fancy setup required just pop them in, and boom: That Harman 2019 tuning hits like a warm hug for your ears. Bass? Deep, textured rumble that sneaks up on you think controlled sub-bass waves on EDM tracks like Daft Punk's "Solar Sailer" or Gesaffelstein's "Destinations," where the lows roll without ever turning muddy or overwhelming the mix. It's punchy enough to feel the thump in your chest during a workout playlist, but precise so vocals on something chill like The Weekend stay front-and-center, intimate and real. Mids are natural and forward no weird recession that makes singers sound distant and the treble? Sparkly highs on cymbals or synths without that piercing sizzle that had me yanking out my old AirPods after 20 minutes. Staging feels surprisingly wide for something so tiny; I caught myself picking out instrument separation in Noisia's "Shellshock" like I was in a mini concert hall. For a beginner, it's forgiving and fun detailed enough to geek out over, but not so analytical that it kills the vibe. Enter the Jade Audio J11, my accidental hero in this rabbit hole tale. This little USB-C dongle (tinier than a lighter) is plug-and-play heaven zero hiss, clean amplification that drives the Zero:2 to its full potential. The real newbie-saver? Its (PC) webapp with 5-band PEQ presets. Stock sound is gold, but I tinkered (because rabbit hole) and added a simple low-shelf boost (+6 dB around 80 Hz) suddenly, those sub-bass rolls in Fritz Kalkbrenner's "Facing the Sun" feel epic, like club-level depth without distortion. At under £12, it's the budget sidekick that makes everything 2x better. This pairing isn't just convenient; it's transformative turning "good" into "why did I ever settle for less?" Comfort and build? Chef's kiss for long-haul listening. The lightweight resin shells with that ergonomic curve sit like they were 3D-scanned from my ears—no fatigue after 3-hour listening marathons. Tips come in sizes that actually fit (pro tip: Try foamies for extra bass seal), and the detachable MMCX cable is sturdy yet flexible tangle-free in my pocket. No blingy case, but who needs it when you're too busy jamming? Look, I went from "earbuds are earbuds" to obsessively A/B testing tracks and lurking on Youtube, forums and reddit, all because these pulled me in gently. At under £30 for the Zero:2 and £12 for the J11, this is entry-level excellence that scales with your curiosity perfect for us fresh-down-the-hole folks without the wallet pain. Minor quibble: The cable's a tad stiff if you're a fidgeter, but that's nitpicking a unicorn. If you're a beginner staring at the void, wondering if it's worth it... yes. These gems made the rabbit hole feel like a treasure hunt. Grab them, tweak that EQ, and let the music pull you deeper. Ears forever changed.

I purchased these as my first pair of IEMs, after around a week of usage I can say these are great. the price to performance on these is simply incredible and outperformed my expensive Apple Airpods for sound quality in my opinion. Infact, I have enjoyed using these so much I am soon going to purchase some more expensive ones. The bass really hits and ive noticed so much more detail and emotion in my music (I listen to many genres), even with gaming they really add that extra clarity and quality that adds a very much needed impact. Also, the fit has been great as they come with multiple changeable tips to ensure your ear is correctly plugged, but the default tip is quite large so I recommend swapping it out unless you have large ears. If your wanting to get into this market of IEMs and dont want to blow a lot of money, these are perfect I have no doubt about it.

They really sound good no complaints on the sound for me using my hiby r1. I had trouble inserting the two pins into the IEM as they wouldn't go the full way in, however I think that was just me being careful not to damage the pins having not had IEMs before after giving it a bit more force they slid in fine . The cable is a bit wispy but they work fine and I've just recently bought them so can't comment on the longevity of the cable. I'm overall happy with the purchase.

Muyyy comodos y el audio es muy claro, no tiene boost en nada en especial, personalmente soy fan de que el bajo te retumbe la cabeza pero teniendo estos ahora es verdad que se escuhca cada cosa y super claro cada matiz en musica y videojuegos, el cable es algo corto pero al menos a mi no me impide nada de movimiento al jugar, es suavecito y bastante flexible, recomendadisimos

i’m very happy with them cheap and it does the job properly. You can hear footsteps directions. Everything else in game I am very a surprised with the performance at this price range

Excellent son à un prix plus que raisonnable.

Linsoul 7Hz x Crinacle Zero:2 in Ear Monitor, Updated 10mm Dynamic Driver IEM, Wired Earbuds Earphones, Gaming Earbuds, with OFC IEM Cable for Musician (Without MIC, Orange) I got these as a way to for Wireless IEM stage monitoring. Typically using Shute iem systems. I own custom mold UEpro Reference IEMs as well for stage work. And I've owned or used Shure se215 and westone 10 20 30 series iems. .... But these were backups in case.... I ended up actually trying them on stage and I'm actually really really really impressed. This is pretty fantastic value. I would argue that if you're NOT going custom, then just buy these. I find these : 1. Fit ultra comfortable and thus provide a really nice seal. Ensure you use the right silicone insert!!! These are more comfortable than Shure se115 and the westone 10 20 30 series 2. These SOUND better overall for iem usage than the westone and shures. They're not as neutral as westone and shures.... Il admit this. But it's a really good mid and high iem so great for singer songwriter guitar and vocals use. I do find the bass is a bit exaggerated for it to be called a neutral sounding iem. I think might prefer less bass and need to ask your sound engineer to eq out the bass to your liking if it is feeling like it muddies your iem mix. The highs aren't irritating... Very well controlled highs that aren't shrilling and do not cause ear fatigue . 3. Having said that if you like bass and you're a bassist or drummer you might welcome these items!!! Because if the sound profile, these are also fantastic near neutral recreational music listening ear phones. .... Whereas Shure and westones were awful recreational music listening earphones ...way too flat 4. The sound isolation is superb. Again I would argue these are better than entry level westone and shures. Exactly what u want for iem stage usage. 5. The cable is on the thin side but has a coating that helps it prevent tangling. I really dislike the westone cable because it's prone to getting tangled up big time. Honestly I'm gonna call it... unless you're going total custom iem (which is superior and is gonna set you back 700+). I see actually very little point buying 200-500$ non custom iems like Shure and westone. Buying this for stage IEM is an incredible bang for buck. I can easily recommend them . I can comfortably have these in my back pocket as backup iem to my UEpro customs.

Worth the price to try this item..feels like a good quality for the price