Your iPhone may be a great smartphone but it does have its limitations. You are going to need a decent speaker or pair of headphones to get the best sound experience on your phone. Devices such as the UAMP also help. This is a portable headphone amplifier that sits between your music player and headphones to bring you a high quality audio experience.
This compact device has a 10-hour battery life. It can provide you with up to 2.5x the volume of your device. It offers 5 equalizer modes. Like what you see? This headphone amplifier is on Kickstarter.[where to get it]