Large, proprietary 14 mm drivers deliver ultra-expressive, high-resolution audionUnique hybrid housings of stainless steel and aluminum greatly reduce unwanted resonance for crisp mid- and high-range reproduction.nStainless steel stabilizers absorb unwanted vibration to prevent audio distortion.nDual acoustic resisters improve frequency responsenIncludes silicone ear tips (XS/S/M/L) and protective pouchnThe ATH-CKR7 in-ear headphones boast large, ultra-expressive 14 mm drivers for outstanding high-resolution audio. Unique hybrid housings of stainless steel and aluminum greatly reduce unwanted resonance for crisp mid- and high-range reproduction. Stainless steel stabilizers integrated into the housings serve to prevent audio distortion, while dual acoustic resisters improve frequency response. Four sizes of interchangeable ear tips let you customize your fit for greater comfort and sound isolation.