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Eartips of the different makes are rather complementary and listeners have to acquire a box full of different types before “tip rolling” to find the best sound appeal for their individual ear canal geometry. So third-party eartips companies must be the best of friends. As they get the deepest inside the ears, the CP155 are also the ones I’ve found myself the least comfortable with on the first try. It takes around five minutes for the silicone to warm up and for my ears to adapt, but then it’s almost as if I wasn’t wearing them at all. Due to their shape they offer an almost perfect seal, so if the earphones you’re wearing provide any isolation at all you probably won’t hear a thing of what’s around you without needing active noise cancellation. Spinfit have been making eartips for a while now, and their claim-to-fame is the name-sake “swivel” mechanism that rotates the top of the inner-stem. This in turn helps to achieve a deeper, more secure seal as the top of the tip (along with the sound-tube) literally bends to get closer to the inner-ear.
The SpinFit CP100+ (or CP100 Plus) are the exact same as the CP100 in terms of size, but they are made with a different material. They keep the same diameter of 4 mm and the same variety of sizes (SS, S, M, L, XL), but they are made of medical-grade silicone and feature more subdued colours and a more transparent dome. The CP145 seem to tame bass a tiny bit to give a small boost to the upper midrange and to treble; mind you, we’re talking about a difference that’s not major and is in fact relatively minute. In other words, you won’t be able to make a warm IEM a neutral one, but you will notice a smaller difference compared to other tips. Overall my sensation is that the CP145 deliver a wider soundstage, probably thanks to the larger presence in the upper area, and more accurate imaging compared to the CP100. They still deliver a generally neutral signature. The main differences with the CP360 are the height and the radius: the CP1025 are shorter and slightly narrower (12 x 6.7 mm vs 13 x 8.5 mm), so they don’t go all the way inside the ear canal but manage to seal it effectively thanks to their wide radius. This also means that they fit most charging cases better, as they are shorter. Fitting earphone nozzles: the first problem for the novice is – and it certainly was for me – to find the right SpinFit model to fit a particular earphone. First, one has to select the right diameter of the inner stem so that the SpinFit is being held safely in place. As a rule of thumb, most earphones have a nozzle diameter of 4.5 mm so that the CP145 is the most universal model for initial tip rolling.Some earphones come with a generous selection of eartips, others don’t. And in some cases, none of the eartips fit or provide an effective seal for the listener, so that the sound quality is compromised. In such situations, third-party eartips come to the rescue. Eartips manufacturers can frolic as there is no real competition between them: all their products are different and there is no universal fit for any earphone/ear canal combination. From the perspective of comfort, although they’re nowhere near the level of triple-flange tips, it still takes a bit to get used to them. They’re much longer than the other earphones and therefore get deeper in your ears, which may be a bit unsettling. I found it’s also a matter of inserting them at the right angle, as otherwise they become very uncomfortable and don’t sound good. If you get the insertion right, though, you get a great level of comfort. I find it inferior to the single-flange tips, but great for dual-flange ones. SpinFit CP360
In terms of sound, there’s not much of a difference with the CP145, though highs tend to be a bit more present (probably due to the material being harder and therefore more prone to reflecting higher frequencies). The main difference between the W1 and the other eartips by SpinFit is the dual-density silicone used to make the inner bore. It has a wave shape, hence the name. This makes the inner bore stiffer, plus it also makes it easier for it to grip earphones’ nozzles and therefore offers more stability. It is therefore advised to use the W1 for especially large and heavy earphones, as it will be difficult for the tips to come off. Soundwise they are also quite close to the CP100, so they have very little impact (if any) on the sound and allow you to hear it as intended by the manufacturer of the earphones.Exceptional clarity with good treble extension. Soundstage is one of the biggest I have heard. Vocal presentation is forward. Can get sibilant when matched with bright earphones. W1 offers a similar fit to CP145, but updated materials and design to generate less pressure inside the ear while delivering a secure fit and seal. Third-party eartips are one of those things that you end up with a large collection of as you fall deeper into audiophilia. The reason is quite simple: universal earphones (i.e. non-custom IEMs) require fiddling with the tips more often than not. Moreover, eartips are just about the cheapest (and often most reproducible) way of tuning an earphone. So we all end up with boxes of eartips of our own, sooner or later. The CP240 is a double flange eartip. Double flange eartips are useful for listeners who have larger ear canals and have a hard time getting a good seal. They can also provide improved isolation in general. On the CP240, the SpinFit pivot comes in between the first and second flange, to provide flexibility at the top for the second flange.
Among the rest, the CP-360 should be in your stable if you’re into TWS earphones, they are one of the few TWS-specific eartip after all. The CP-500 is a specialist eartip that can be unpredictable, and being the widest-bore tip in Spinfit’s lineup offers something unique. Finally, the CP-240 is something I couldn’t find a use for and the CP-800 didn’t perform as well as the tips it’s supposed to replace (for me). So these two don’t excite me as much. mm longer than CP-100 and CP-145, the additional length and bullet-shaped caps of the CP-155 allow deeper insertion to bring more bass and fuller vocal. The vocal presentation is very clean, but male vocals sound a bit thin to my ears. However, female vocals are really enjoyable on the EM6L. In fact, I would say that female vocals sound even better on this than on the Xenns Top. CP360 and CP1025 are designed for TWS earphones. CP360 is designed to provide a deeper fit, while CP1025 is more shallow. While both will fit on most TWS earphones, some charging cases may not be compatible with the CP360. CP1025 is also available with adapters for Apple AirPods Pro and Samsung Galaxy Buds Pro. W1 The peculiarity of the CP100 is that they are tall (9.9 mm), but they are actually quite wider at 13.3 mm. This means that they won’t need to go very deep to seal off your ear canal and therefore will also be fine for earphones with short nozzles. Thanks to this good seal, bass is well extended and controlled, while the rest of the range comes out as well balanced and with no particular colouration and the same sensation of good control as in the lower area. As a whole, the sound is mostly unaltered and this also includes the “bad” side of this, as the tips won’t reduce peaks e.g. in the treble area.In this round-up, we shall explore how well this mechanism works across a variety of IEMs. Models to be evaluated: Spinfit CP-100, CP-100+, CP-145, CP-145 (medical-grade silicone), CP-240, CP-360, CP-500, and the CP-800. The only two in-production models that I don’t have with me are the CP-155 (I don’t have a large-nozzle IEM at the moment) and the Airpod-specific CP-1025 (I don’t have an Airpod). With that out of the way, let’s head right in.
They are equivalent to the CP100 in every respect, except for sound: the new material makes treble a bit stronger overall. SpinFit CP145 The Spinfit CP-100 is probably the most popular Spinfit eartips around. They are also the most widely available one. The original CP-100 model had a fairly stiff, color-coded stem (with color changing upon size) and the outer material was also fairly stiff. This model suited a number of IEMs especially those with a shallow nozzle (e.g. Dunu Luna, pictured below). The CP-100 was pretty much a utilitarian eartip, as in it would suit most models without affecting the FR too much or causing discomfort. I personally found the surface of the tip to be somewhat itchy after long-term use, and the stiffer outer layer didn’t have the best grip with the inner-ear wall. In this review, I will be discussing the Simgot EM6L, comparing it with the Xenns Mangird Top and QKZ HBB Khan. I have tested the EM6L using the Moondrop Moonriver 2 Ti and Fiio Q3 Dac Amp. The SpinFit CP360 are the first tips SpinFit developed specifically for “true wireless” earphones: they’re much shorter than the others because they need to fit in the cases, which often offer very little space for eartips. This means they can’t count on the depth of the insertion to give you isolation and have instead to rely on width: the ear canal is larger at the entrance and so these eartips need to be wider to seal it. In fact these are among the few SpinFit models to offer an XL size (on top of L, M, S and SS) and that’s because of this. The L size is 13 mm in width and 8.5 mm in height, while the XL is even larger at 14 mm wide and 8.5 mm high. They are basically shorter CP100! That’s also true when you look at their shape, which is similar but more compact. The inner diameter is 3.6 mm. That preamble aside, the CP-500 has a soft flange along with a similarly soft bore. The flange also has a somewhat oily texture to it, resulting in a fit that’s not the most secure and requires a bit of a deeper insertion. It’s a very comfortable eartip but isolation is worse than the CP-100/145/360. This is an eartip I’d recommend if you’re someone who’s into “tip-rolling” (as in, experimenting with various eartips). The CP-500 provides interesting results with many IEMs.For neutral tonality with emphasis in bass, midrange and vocal. For clarity and bigger soundstage, choose CP-240. The CP100 provides an easy fit on an IEM with smaller to medium sized nozzle like 64 Audio’s Universal fit offerings. CP145
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