Immerse yourself in an emotional sound experience and outstanding midrange reproduction. Ultra-high resolution and amazingly wide soundstage accurately recreate the experience of live performances as if you were sitting right in Carnegie Hall. The special dual-driver design developed by HiFiMan offers smooth and seamless reproduction of different music frequency bands. 8.5mm for high/mid/upper bass. 9mm for low bass. A two-pin connector ensures a proper connection to the earpieces while allowing for a full range of movement. This design allows for easy replacement of different cables to best suit each individual's needs. Noise-Canceling Performance Custom-molded to fit your ear, each curve of the RE1000 perfectly follows the shape of your ear as it canals to obtain ideal noise-canceling performance. As a result, there is no need to raise your volume levels, preserving your hearing and thoroughly eliminating outside noises thanks to passive sound isolation. Truly Customized Design No two handcrafted RE1000s are identical in shape in size. Customize the colors and shades to your personal preference.