The DIY Earphone System is a concept modular earphone system. Almost every part of it is detachable, allowing you to change the left earbud, right earbud and also the central module. It’s available in various versions, allowing you to control the music on your media player via the built-in controls, or you can also hook it up via Bluetooth in another version. Since it has two audio output jacks, you can also use it to share your tunes with your friends.