K3003i Reference Class 3-Way Headphones. The AKG K3003i reference in-ear headphones are a breakthrough in audio technology, combined with scientific technology and premium materials. The K3003s' stainless-steel housing is robustly durable, timeless in appearance and easy to maintain and it quickly adapts to your body temperature for comfortable use indoors or outside. Robust-material design: The housing of the K3003 is chiseled out of one piece of brushed stainless steel. This extremely durable housing not only protects the earphone body from scratches but also safeguards the K3003s' inner workings from physical damage. The attached steel-skinned remote control can receive or terminate phone calls, skip and pause music, and control the volume of your sound, while the stainless-steel material gives the remote long life, endurance and scratch resistance. The K3003s' 3.5mm (1/8) jack plug is plated in rose gold to provide maximum signal transfer with clear and lossless sound. And it's encased in stainless steel to secure a strong, steady connection. The fabric and silicone materials in the K3003s' cable allow tangle-free handling and make it durable enough to deliver your music reliably for a long time. Exceptional audio clarity: The K3003 earphones set a new benchmark in audio quality. By pioneering the hybrid of one dynamic and two balanced-armature drivers in each earphone, AKG engineers have created perfectly balanced 3-way earphones with ultralow distortion, accurate mids and crystal-clear highs. The combination of dynamic bass and dual balanced-armature drivers gives the K3003s excellent audio performance as well as matchless mechanical design. Due to the positioning of the speakers (the dynamic driver is behind the dual balanced-armature driver), the K3003s don't need any additional frequency switches. The result: less potential interference. Self-made sound tuning: K3003 earphones provide you with one-of-a-kind personal sound-tuning capabilities. By chang.