The ZEN Air CAN is a powerful, hi-res home analogue amplifier that provides greater headphone enjoyment with any analogue source such as your PC, Mac, smartphone, tablet, streamer or TV. The ZEN Air CAN is an amplifier pure and simple. It simply takes an input signal from a source such as those mentioned above and creates a larger copy of the original signal before it's sent to your headphones. Think about listening to sound with your hands over your ears and then removing them! Adding the ZEN Air CAN into your system is a little like that - back comes clarity of sound as well as volume.