Truthear is a relatively new brand, but they chose to collaborate with Crinacle for their very first mainstream offering. Crin has been tuning IEMs for a while, and some of them have been quite popular e.g. the Blessing2 Dusk. Truthear Zero is the latest in the line of Crinacle-tuned IEMs and has a rather unique dual-driver setup where one driver acts as a true “woofer”.

When these qualities are combined with its monitor-like tuning, the RED’s overall presentation is unique among the IEM market. The RED’s textured bass and tightly controlled treble response elevates its sound beyond seemingly similar IEMs. While its smaller staging could be improved, I don’t think it detracts too much from the sound and its coherency and articulation more than makes up the difference. I’ve heard a lot of budget IEMs. Most are me-too products in the race to the bottom with the usual trade-offs in tuning against its peers. The RED is not one of them. Newcomer’s Note: This article is written towards those who have been in the hobby for a while and will feature discussions of frequency response graphs and measurements. If you’re unfamiliar with them, here is a great primer from Resolve on what those graphs are and how to interpret them. Feel free to join the Headphones.com Discord server where there’ll be plenty of hobbyists to answer any questions you might have. Next, if you go from 300 Hz up to 1000 kHz, this is known as the Lower Midrange, and this is a crucial region for The Truthear x Crinacle ZERO: RED is the latest collab between IEM measurement internet celebrity Crinacle and Truthear. Their previous work was the Truthear ZERO which, like the RED, used a duo of dynamic drivers and was tuned to the Harman IEM target.I’m sure people will proclaim that the ZERO: RED proves that all pricy IEMs out there are a scam. I will admit that these IEMs will make me a harsher judge because the ZERO: RED have superb value for the price. Where more luxury IEMs take over is in technical performance. The included filters can come on handy, however it’s up to the user to figure out how to swap them. All products sold on Headphone Zone carry a GST compliant invoice and all products sold include an 18% GST. listening on monitors or headphones. But if you’re listening on a laptop or a phone, there’s no way you will hear What I don’t like is that lid to the actual cardboard container is held firm by air suction, and there’s nowhere to grab it. You just have to let it slowly slide down and catch it once it comes loose. After opening it a few times, it gets easier. Inside the box one finds a nice set of eartips.

Finally, I will only evaluate the Red based on their performance, even though I will explain how it feels and seems physically and aesthetically.

The included cable is fine. It has four separate conductors, so a retermination to balanced is doable. It is a bit prone to tangling but doesn’t hold kinks and bends for a long time. The cable works fine and keeps out of the way of the listening experience. Comfort Inside I’m greeted by the IEMs and a nice pleather case. Inside is the cable and an assortment of ear tips. The ZERO: RED also ships with a 10Ω impedance adaptor for a more bassy sound. In the box After the Upper Midrange, we’ve got the Treble region between 6kHz and 8 kHz, and this is where things start to Please keep in mind that these are rough estimates and shipments can be delayed due to unforeseen circumstances, like postal strikes or severe weather.