Custom-fit earbuds and headphones can be scarily expensive because the price often includes high quality sound drivers as well as the custom moulding. Advanced MP3 Players have come up with a product that solves this problem by adding a molding to already-owned earbuds – the Sharkfin Self-Molding Earbuds.
Inside the somewhat Spock-esque package are two small pots of self-molding silicone that when mixed together will set in about 5 mins. There’s a choice of two colours at the time of purchase, white or gray.
The idea is that you mix the silicone together, wrap a small roll of the material round the outer part of the earbuds, pop the earbuds in your ears, then knead the silicone into the auricle (or pinna) of the ear, before leaving to set. Here’s a video of the process.
Once set, you have a pair of earbuds or headphones customised perfectly to your ears that stay in place even when you are working out.
Naturally in the interests of research for the readers of GNC, I used the Sharkfins on a pair of Sennheiser earbuds. There’s sufficient molding material to do three fittings, so if the first one doesn’t work out, you get a second chance….which you’ll probably need. On the first one, I didn’t get sufficient coverage on the earbud itself and the molding came away from the earbud. The second time I was more successful.
Here’s a picture of my earbuds with the molding in place. I admit it’s not that pretty and it would have looked better with white earbuds but they definitely stay in your ear. I never knew my ear was so wiggly!
Another tip from the fitting would be to keep them in your ears a bit longer that the suggested 5 mins. The silicone was still quite soft at 5 mins, but had firmed up nicely by 10 mins. Leave for a few hours to make sure it really sets.
Any downsides? Depends on your point of view….I think I might be too self-conscious to wear these in any circumstances other than at the gym or running. Putting in the expanded earbuds takes a little getting used to, but once they were in, they were in. Finally, the silicone didn’t stick to my earbuds which meant that the moulding was easy to remove when I wanted my earbuds back to normal. That may be a positive or negative.
The Sharkfin Self-Molding Earbuds cost just £4.99, which I think is a good deal. If you try them out and don’t like them, you aren’t out a lot of money. Similarly, if you break your headphones at the gym, it’s not going to cost much to replace them.
Overall, a good idea at an excellent price that suffers aesthetically but if function wins out over form, these are for you.
Disclosure – the Sharkfin Self-Molding Earbuds were provided free of charge by Advanced MP3 Players.






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