The DK-3001 Pro is a musical sounding iem that is able to provide smooth bass, appealing midrange and controlled treble expression. There is a bodied and engaging sonic performance. In addition, the build quality is solid and the DK-3001 Pro utilizes a premium cable that is versatile via the interchangeable jack with quick switching connectors. The Dunu DK-3001 Pro is a worthy successor to the DK-3001 with its sublime sound.