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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 SpinFit CP145 are much like the CP100, but they have a smaller top so they go better inside the ear. The difference is not dramatic in terms of size, but the fit is quite different. The general shape is again ogival, with a height of of 10.1 mm and a with of 13.5 mm. With an inner diameter of 4.5 mm, the CP145 can fit earphones with nozzles up to 5.5/6 mm in diameter: that means that even IEMs with larger soundports, like the Tin HiFi P2, Shanling ME500 Platinum, Fearless Audio S10 Genie or Moondrop A8 will fit correctly, though the silicone will stretch a bit. There are just three sizes: S, M and L. 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 big difference in most of the models is the size of the bore for the IEM nozzle. Generally you want a tip that’s easy to get on, but not TOO easy to make sure that you have a tight secure fit. The more secure the fit, the better your isolation will be, but if you go with something that’s too snug you’ll risk damaging the eartips when you take them on or off. Passive isolation is quite good, too: probably due to the relatively deep insertion and wide dome, the SpinFit W1 are quite successful at sealing off the ear canal and therefore offer great isolation. Final ThoughtsThat 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. SpinFit told me that the silicone in this case is “edible grade”, so even though it’s probably best to not put these over your pasta you probably won’t have any allergic or otherwise adverse reactions to it. SpinFit W1 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. The wearing experience is very similar to the CP145, but due to the additional stiffness they can feel a bit more fatiguing during long runs. While the dome is made of the same silicone, the different inner bore has a small impact on comfort.
The CP100 provides an easy fit on an IEM with smaller to medium sized nozzle like 64 Audio’s Universal fit offerings. CP145
SpinFit CP1025
For neutral tonality with emphasis in bass, midrange and vocal. For clarity and bigger soundstage, choose CP-240.
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 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. Everything else is the same as on “normal” silicone eartips, which is also why the SpinFit tips are so great: you get all the pros (good isolation, washability and basically eternal durability, wide compatibility) with none of the cons. Eartips are a very personal thing. There is no good or bad in most cases, there is good fit and lesser fit, which depends on both the devices they are mounted on and the listeners’ ear canals. These variables create a large number of possibilities and uncertainties so that no eartip is fitting universally. These variables are: 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.
SpinFit CP100+
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.
These eartips are meant for true wireless earpieces. If you find SpinFit CP-350 too short, this one fits between regular CP-145 and CP-350. Bass and low-mids are stronger than CP-350. Vocal is forward with good clarity.The SpinFit CP100 are the basic model, which by shape and feel most closely resemble “standard” eartips. They are conical (a wide ogive, to be exact) and offer a diameter of 4 mm which fits most earphones (including the Campfire Audio Vega 2020 and Dorado 2020, the Thieaudio Legacy 4, the Tin HiFi T2), but which is also a bit tight for earphones with larger nozzles. Still, they’re the ones that will probably fit the larger number of earphones, as they do just fine even with those that have a smaller nozzle like the Legacy 4. They come in 5 different sizes: SS (XS would have probably been better), S, M, L and XL. The CP100 has a 4mm opening and is the all-around, works with just about anything tip. It’s small enough to work with IEMs with smaller nozzles, like those on 64 Audio’s line of IEMs, but still big enough to stretch onto Noble or Empire Ears wider nozzles. The challenge is that with bigger models, you’ll generally want a little more room to work with, rather than having to fight to get the tips on and off, and potentially damage them. I also noticed that the EM6L is quite dependent on the source material and the DAC amp connected to it. When I connect it with my Moondrop Moonriver 2 Ti, the mids and trebles are a bit smoother and more forgiving. Whereas with my Fiio Q3, songs with bad recordings or sibilant sounds come through as such. With the Xenns Top, either connected with Moonriver 2 Ti or Fiio Q3, songs with bad recording or sibilant in nature do not sound as bad as they are. As a last bit, the silicone is actually medical grade, so the added benefit is you shouldn’t have issues with allergies and other adverse reactions. SpinFit CP500
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