The original Audio-Technica ATH-CK100 earphones contain a titanium housing, and claim to be the “world’s smallest” triple-driver earphones. Adding drivers to earphones is akin to razor manufacturers adding more blades to their razors with the idea that more is better. For the premium prices that these manufacturers are charging, which includes Ultimate Ears’ Triple-Fi 10 Pro and Shure’s E530, you’d think that these would be a slice of audio heaven. Unfortunately, that’s just not the case. In our tests, one of the frequency ranges usually suffers and the earphones are often uncomfortable due to their bulk.