No matter how many sizes of spare silicone tips you try out, the stupid earbuds ultimately fall out -- or are so tight you can't concentrate.

Revols, a startup in Montreal, thinks it has the solution: earbud headphones that mold to your ears. With the help of a smartphone app and some engineering magic, Revols says its earbuds morph into a tight-fitting earbud in 60 seconds.

It's a bold claim, but a demonstration of a prototype in the CNNMoney newsroom showed they might actually work.

I tried on the headphones, and after they hardened, they fit so tightly inside my ear that they were actually somewhat difficult to take off. (When trying to remove them, I accidentally ripped off the plastic piece glued to the tip. Revols says the finished version will be better secured.)

The prototype I wore didn't actually play any sound. The company says it has partnered with audio equipment giant Onkyo (owner of the Pioneer brand) to develop what it claims will be a top-of-the-line audio experience. But that remains to be seen.