I should mention right away that I have been impressed with IEMs that cost $15 just as much as those that cost $5200. I've also seen 4-figure IEMs that are surpassed for tonality and overall user experience by those that cost under $100. As such, I am not intending to simply tell you that Antlion Audio should stop selling the Kimura IEMs completely. Instead, I appreciate what the company has done here in trying to put out a cohesive family of products based around making a portable headset experience and this works with its strengths in the PC gaming and microphone space in general. I would happily tell you to purchase decent headphones and ModMic rather than get a gaming headset for the same money, and in this regard the Kimura microphone cables get an easy recommendation from me—hence
the award below that is just for the cables. Antlion Audio isn't the first to come up with IEM boom mic cables with ~4-5 other offerings from European and Asian audio brands that cost similar to more than the cost of the Kimura microphone cable. I can't speak for any of them but, especially for those in the US or Canada, I can certainly see the local reputed company with good customer support winning over others even if the cables and microphones sounded exactly alike. That in itself might be tough to do because the Kimura microphone is comfortable and easy to use in addition to being excellent in what it does!
Unfortunately I can't say the same about the Kimura Solo and Duo IEMs. I am not sure why Antlion went with these drivers and tonality given even the V-shaped tuning has been done better at a much lower price point. The Kimura Solo in particular sounds a lot like any of the older KZ IEMs on the market that cost much less. The Kimura Duo is better in a few different places and yet at $150 the IEMs would themselves be ~$90-110 depending on the incremental cost of the microphone cable over that of a non-microphone cable. There are inexpensive in-line cables for ~$1-4 more in the case of budget IEMs these days but those pale in comparison to the sound quality of the microphones here. Even assuming a generously low $80-90 for the IEMs alone, such is the nature of the ChiFi IEMs market that you can purchase, from Amazon with free shipping, many other IEM sets that do the V-shaped tonality better. There are yet more sets which are balanced and offer more for gaming and general media consumption even if you are not an audiophile! As it stands, I can't recommend the Kimura IEMs but would certainly encourage Antlion Audio to keep at it and improve with future releases, given there are plenty of positives to be had on the looks and build quality aspects here, as well as general fit and comfort too.