Although their images show iPhone 4s, the Wave Cradle stands are designed to improve the sound from any smartphone or MP3 player with speakers on the bottom. The Wave Cradle Classic (left) and Wave Cradle Low Profile (right) stands have a curvature plate that redirects the sound from the bottom speakers out toward the front. They reportedly project crisp, clean sound up to 20 feet away. Both stands are made from aircraft-grade aluminum, and both have rubbery grip pads to hold your phone/MP3 player securely. Each style is available in black, blue, or pink. You can purchase these stands directly from Wave Cradle or through Amazon. The Classic is $26.50; the Low Profile is $16.85.