SpinFit SpinFit CP145 – Patented Silicone Eartips for Replacement (2 Pairs) (4.5 mm Nozzle Dia.) (Medium)

Been looking for suitable tips for my FIIO FH5’s. Using Inairs on my Shure SE215 which are perfect for those. Didn’t work at all for me on the Fiio’s. Felt like they were jammed in my ear and effected the sound, lots of low end but dulled the mids / highs. Similar experience with Comply tips on the Fiio’s too. Tried the Spinfit 155 (medium) which gave a lovely balanced sound, to my ear anyway. They were just a little loose on the nozzle and a tad too long which irritated my ear canals after a while. The Spinfit 145 (medium) are perfect. Snug fit on the nozzle, good seal in the ear canal and used for hours with total comfort. They give the earpieces a better, secure fit than the supplied tips fromFIIO. Lovely low end thump but with all the clarity the FH5’s possess. For me the 145’s are a perfect match with the FH5’s. Very subjective I know, but hopefully helpful for anyone looking for suitable tips.

I got some Campfire Audio Polaris II IEMs recently and really struggled with comfort on the standard tips.I get a lot of ear infections and my right ear especially swells inside and can be uncomfortable. I read about these tips on Reddit and wanted to give them a try.I put them in and amazingly I got a seal and a comfortable fit in one hit. The sound is crisp and clear but now I also have the feeling of not knowing I'm wearing the IEMs at all.I'm sold straight away, I can't speak for durability but I have 2 sets, they look like they will stand the test of time.Try them out!

Don't know whether I've got a defective pair, but the rubber seal doesn't grip around the nozzle/spout of the earphones tightly enough, meaning that unless I remove the earphones with the greatest of delicacy from my ears, more often than not the tips remain stuck in my ears. This is the same on the BLON BL03 and Campfire Audio Andromeda iems I own. I've never had this issue with any other pair of tips I've owned apart from ones where the silicone has began to loosen and stretch after months worth of continuous use.The seal in the ears is good, the sizing is accurate but these are unusable for me for this reason. The 'spin' element seems entirely like marketing hype. These are entirely bog-standard, neutral sounding tips. If it wasn't for the defect I'd be largely happy with the sound/seal.

They were easy to fit on my ZS10 pro IEMs and they feel like a better fit than the eartips supplied with the IEMs.

I use these with a number of different IEMs, such as my AKG n5005, FiiO FH7 and campfire Solaris. I’ve tried a large number of other tips but nothing really comes close.I find that they are the only tips that give me a good seal and don’t require a lot of repositioning to get a good sound. I can use them for ours without getting any discomfort too.