Packed with interesting sounding audio technology, the Soundfocus Amp speaker system is a case that slides onto your phone to make it sound so much better, whether you use headphones, AirPlay or even make a phone call.
The case features two speakers, but its biggest audio playback secret is the software. You see, the system tests your hearing patterns, and monitors your environment to try to identify the best way to optimize audio for your needs. The aim of the exercise is to ensure music played through the system is specially tuned for your ears and surroundings. It's worth a listen. ($129, available for short time at $79).