1Compatibility: For NWZX507 DMPZ1 NWZX300A NWWM1Z TAZH1ES NWWM1A MDRZ1R PHA2A, for Lotoo PAW6000, for R2R2000, for FIOM11, for Cayin N6ii DAP, for iBasso DX160 Player, for DAP. 2Gold Plated Connector: Gold plated connector is more resistant to plug and unplug, resistant to oxidation and wear. Transmission and resolution of the sound are undisturbed, providing lossless sound quality. 3For Music Enthusiast: 4mm balanced male to 5mm stereo female. It has the function of eliminating the skin effect that affects the high frequency transmission of sound, and has a rigorous production process. 4Restore Real Sound: OFC wire core with good conductivity, which can improve the resolution and separation of the earphone and eliminate the dull bass of the earphone. More transparent, natural, beautiful sound. 54 Strand Structure: Headphone cable 4 strand structure provides maximum durability with high tear strength and abrasion resistance. The length is 0.49ft, compact and portable, and easy to use.