The upgrade cable is made of 5NOCC braiding, which has strong corrosion resistance and anti-interference ability. The highly elastic transparent PVC protective layer makes it tougher. The transmission rate is stable, the middle and low frequencies are more prominent, and the overall sound quality is full. Upgrade your hearing experience on hi-resolution, audiophile or HiFi headset. Compatible with Sennheiser HD820 HD800S HD800 headphones cable, (Red R right side, Black L left side). Work with devices with standard 4 Pin XLR jack, Compatible with Sony TA-ZH1ES, Shanling H2.2, WOO WA22, Aune S7, S6, X7S, VIVA Audio Egoista 845, Simaudio MOON 430HA, MK3 SE, Compatible with Aune S7, S6, X7S, SPL Phonitor X/E, Lake People Violectric V281, Yulong DA9, Aquila Amplifier. Package includes: 1 x headphones upgrade cable. Compatible Headphones: - Compatible with Sennheiser HD800, HD800 S, 506911, HD820, 507435 cable - Compatible with Simaudio MOON 430HA cable - Compatible with Yulong DA9, Aquila cable - Compatible with HeadAmp GSX MK2 cable - Compatible with Lake People Violectric V281 cable - Compatible with Simaudio MOON 430HA cable - Compatible with SPL Phonitor X/E cable - Compatible with VIVA Audio Egoista 845 cable - Compatible with SOUNDAWARE P1, A300 cable - Compatible with SENNHEISER hdvd800, HDV820 cable - Compatible with Sony TA-ZH1ES cable - Compatible with Aune S7, S6, X7S cable - Compatible with xduoo TA-10, TA-20 cable - Compatible with TOPPIN DX7s cable - Compatible with GoldenWave GD-02 cable - Compatible with DAART Aquila cable - Compatible with Melodious HA800 cable - Compatible with WOO WA22 cable - Compatible with cayin IHA6 cable - Compatible with GUSTARD H20, A20H cable - Compatible with MK3 SE cable - Compatible with Fostex HP-A4BL cable - Compatible with Shanling H2.2 cable - Compatible with Questyle CMA400i, CMA600i cable and more 4Pin XLR Connector port headphones. Note: - headphones AUX cord only, headphone is not included. Package Includes: - 1 x headphone cable