1、[Gold Plated Connectors] 4.4 mm 5 poles balanced male to 2.5 mm 4 poles balanced female gold plated connectors. Gold plated connectors are more resistant to plugging and unplugging and have excellent resistance to oxidation and wear. Sound transmission and resolution are not disturbed, thus providing lossless sound quality. 2、[Copper wire core] The wire core of the adapter is OFC copper wire with good conductivity, bright and shiny cover and high corrosion resistance. It can improve the resolution and separation of the headphones, eliminate the dull bass of the headphones and make the sound more transparent, natural and beautiful. 3、[Compact And Durable] Headphone sound cable it looks high grade and attractive, and the 4 strands twisted wire provides maximum durability. This sound cable stands up to wear and tear. The cable has high tear strength, and abrasion resistance gives it a higher service life. The length is 15cm, compact and portable, easy to use. 4、[Eliminate Skin Effect] 4.4mm balanced male to 2.5mm balanced female adapter has the function of eliminating the skin effect that affects the high frequency transmission of sound, with a rigorous production process to restore the real sound, so that you have a different listening experience for music lovers. 5、[Compatible] 4.4mm balanced male to 2.5mm balanced female adapter cable Compatible for NW‑ZX507 DMP‑Z1 NW‑ZX300A, for HiFiman NW‑WM1Z TA‑ZH1ES NW‑WM1A MDR‑Z1R PHA‑2A for Lotoo PAW6000 ,for HIFIMAN R2R2000 for FIO‑M11 for Cayin N6ii DAP for IBasso Sound DX160 Sound Player, DAP