Maker of high-end headphones, Etymotic, has recently announced that it has partnered with the UK's Advanced Communications Solutions (ACS) to offer its hf2 headphones with silicon earbuds that are custom-molded to fit the contours of a wearer's ear. This process, performed by ACS, involves pouring a fast-setting compound into a user's ear and then using the mould to produce the earbud. This results in near-perfect isolation from ambient sounds, letting users listen to music at lower volumes and without the conflict of outside sounds. A bonus is a better fit that will keep the earbud in place for longer.

These and the standard hf2 earbuds double as a headset for compatible cellphones, including Apple's iPhone, with both an in-line mic and a call answer/disconnect button. The custom hf2 earbuds will be available on April 28th, with the prices for the headphones themselves priced at the equivalent of $131 in the UK. The custom fitting process doubles that cost. [via TechDigest]