Loud music can cause hearing damage, especially when it's coming from headphones. But one Bay Area company has a way to let you crank it up safely. They're tiny speakers that deliver big sound, built into an earphone that blocks most outside noise, so you can sleep. And they can personalize them with art ..the music pros love this, and so might your ears.

Here’s the dilemma: you’re listening to your favorite music, and outside noises are not only bleeding in, they are making your music less clear. Sleek Audio may have the answer.

Sleek Audio has been trumpeting its "tunable acoustics" for years now, but up until the advent of the SA1, most every set of customizable earbuds from the outfit was only in the realm of feasibility for those with a copious amount of disposable income.