Only used for about 10 minutes to check the operation after purchasing new. #Marshall #Moondrop #Sony #AudioTechnica #AKG #Sennheiser #SHURE #BOSE #beyerdynamic #HIFIMAN #TFZ #Fiio #CCA #KZ #TRN #HighResolutionAudio #RemovableCable Important Notes ■ I cannot answer specialized questions or provide after-sales support. ■ There may be minor scratches on the exterior that are not mentioned. ■ The actual product color may differ depending on the computer equipment and monitor environment you are using. ■ This item has been stored at home in a non-smoking environment, but it is a home storage item, so please refrain from purchasing if you are sensitive or looking for a perfect item. ■ Returns are not accepted to prevent the swapping of contents. ■ Please understand the above points and purchase with no claims and no returns.