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, Silver)

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.

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!

Sound quality is great, miles ahead of pack in ear buds, and in fact better than some IEMs at a higher price level. Good bass, including sub bass, without it being overwhelming or muddy, nice detail, can really make out the bass guitar parts on some records for example which cheap earphones struggle with, sweeping guitar riffs sound lovely. Can't comment on longevity as I've only just received them, but I've received other cheap IEMs that were DOA so they're winning on that front. Cable is fairly cheap but it's a) removable and b) a cheap set so. You can always replace with another cable but you'll probably find a replacement cable is the same price as the IEMs themselves. Soundstage is impressive too, I use them while playing Switch and the spatial sound is great, especially in eg Dragons Dogma, Skyrim. Comes with a solid array of tips too, not just S/M/L but in-between sizes too. I've had no issue with fit and they seal well, nothing falling out if I shake my head. Of course they're £20 IEMs so they won't stand up to a £120 pair of Sennheisers, but they're a really solid choice, just wouldn't buy them if you need something that you can expect to stand up to a couple years of use. The sound quality is ahead of the price, but the build quality is firmly the price they are, that's the price you pay. I would pick these over a £30 set of more well-known brands, which I've had fail on me too.

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.

Seriously impressed with these IEMs, I bought them after seeing multiple positive reviews on YouTube, Headfi, Audio Science Review etc and they certainly didn't disappoint. Once you've got a decent fit from some of the supplied tips (six pairs), sound quality is fantastic. Not just 'fantastic for the incredibly low price' but genuinely great. If you have a decent hi-res source a good demo would be 'The Love Invention' album by Alison Goldfrapp - bass is rumbly, sound stage is big and spacious, and I didn't need to change any EQ settings on my DAP. Also, these are far more comfortable than my Honor X3 pro wireless earbuds which were five times the price. Negatives are: - the build quality isn't great (particularly the cable) but given the low price it's worth 'upgrading' if/when the cable does eventually fail - some people just don't seem to be able to get a decent fit (a good seal, with good comfort) at all, with any of the tips. The one-star reviews saying 'these sound bad' are, I'm sure, because people didn't get a good fit: it is essential - no case or clip to hold a coiled cable, but understandable given the price If you're on the fence about these, take another look at the price and just go for it. If they fit your ears you will be impressed too.

I know this is a budget pair of earbuds but come on. For starters the design of the cable is ridiculous requiring you to wrap the cable around the top of your ear. The cable is too short for most things and you will more than likely need an extension if you plan on using it plugged into anything sitting at a desk. If you buy the orange set good luck working out which bud to plug which cable into at the start as the 'L' and 'R' labels are the same colour as the housing. Changing tips is a nightmare because the nozzle is too wide, the tips to narrow. Sound quality wise - since I'm currently bent over the side of my chair to get my head close enough to the headphone socket to wear them I'm almost certain the blood from my head is draining into my ears and effecting the excellent tuning/separation but this aside the audio is high heavy and a bit hash to my ears.

Why did you choose this product over others?: I chose these IEM’s as I use them for DJing and all reviews and tech data say they are less fatiguing due to less harsh top end. I also have tinnitus so that is a great spec for me, those harsher high ends do the damage. The sound is nice and clear, rich low end, clear mids and overall decent sound at this price! Now, what you are paying for here is the IEMs, the cable included is basic and will suit many but it’s flimsy at best. The eartios are ok but again, just basic. I upgraded my cable (it was £24) and upgraded the eartips to memory foam (pack of 10 pairs was (£13). With those upgrades these IEMs are very good at this price! The new memory foam eartips create a nice tight comfortable seal. The cable is quality and 2 metres long. The stock cable and eartips may be good for many people, so don’t feel you absolutely have to upgrade. I’d recommend these IEMs. (Note: My photo shows the Zero 2’s worth my upgraded eartips and cable).

These are pretty impressive for the price. Overall, the sound is well balanced and doesn't have an overpowering bass. I usually produce, mix and master electronic dance music with two Byerdynamic headphones and this actually fits in nicely in between. You can hear a lot of detail in the music. First IEM purchase and im happy.