Original earphones for Koss headphones - ,- Set of 3 pairs of foam earmuffs ,- Does not affect listening quality ,- These Koss headphones are designed for use with the following products : KSC7, KSC11/12, KSC75/T, KTXPro 1 ,- KTX8/16, PTX6/CX6, Porta Pro, Porta Pro 2, Porta Pro Junior Sporta Pro ,- UR5