Many smartphones do not deliver satisfactory sound quality and, depending on the headphones used, not enough volume. Many smartphones no longer have a 3.5 mm headphone jack for using wired headphones. This is where the DC03PRO from iBasso comes in. The small headphone amplifier is inserted between the smartphone and the headphones and takes over the digital-to-analogue conversion in high-resolution quality. You immediately benefit from a detailed, finely resolved and voluminous sound. The iBasso DC03PRO can also be used as a USB DAC on Windows or Mac computers - for more powerful, detailed sound quality when listening to music or for more volume and precision when gaming. The two Cirrus Logic CS43131 DAC chips convert the signal losslessly from digital to analogue for a lifelike, detailed sound reproduction. The DC03PRO is lightweight and compact, so it only adds a few centimetres to the headphone cable, but doesn't interfere at all. The iBasso DC03PRO USB DAC headphone amplifier is a straightforward super-portable solution to quickly and easily enhance the sound of Android, Windows or Mac devices. With the help of an optional USB-C to Lightning adapter, the DC03PRO can also be used with iPhones and iPads.