Ditch the cables and insert a little style into your musical experience with the Koostik. Available in Walnut or Hard Maple, the Koostik naturally amplifies the sound coming from your iPhone 4, 4s or 5. You’ll get 2-4 times the volume without plugging anything into the wall. Made in the US by hand, the Koostik is a beautiful piece of craftsmanship and a useful desktop tool. Available in Original and Pivot styles.