Unsurprisingly, the output of the Image X10i is akin to that of the Image X10. Shockingly, the addition of an in-line remote hasn't changed the sonic signature. Klipsch shouldn't be worried about that, though, because like the Image X10, the Image X10i sound excellent.
As we noted with the Image X10, the Image X10i produce great low-end depth, punch and clarity. Lesser earphones let powerful bass response overpower the rest of the mix, but not so with the Image X10i. Vocals are detailed accurately and smoothly, blending in to the strong bass line. A clean, crisp high end rounds out the overall image, giving a thoroughly pleasant overall listening experience.
But while the Image X10i earphones sound great, there's better to be had for similar money. Though superseded by the SE535 earphones, it's still possible to find a pair of SE530 for a similar price to the Image X10i and the former are simply better - offering more clarity, more precision and greater value for money. That said, the Image X10i shouldn't be ruled out, winning out on comfort and having that in-line remote to consider.
You'll have to own an iPhone of iPod and be really keen on the idea of an in-line remote to buy the Klipsch Image X10i earphones. They look great, sound fantastic, and are inordinately comfortable, but the price is very high, making it especially convenient that the Image X10 earphones are still available for significantly less money.