SONY WH-1000XM4 Self Repair Kit Earpads Replacement

Firstly, it's important to avoid purchasing third-party earpads, especially those from China, as they can compromise the sound quality of your headphones.

Noise-cancelling headphones rely heavily on a perfect seal for optimal noise cancellation, and third-party earpads may not provide the same level of noise isolation as the original ones.

In Korea, you can purchase original earpads from the official Sony store under the name WHXM4BLSK self-repair kit. For accessories related to other Sony products, you can explore the Sony Korea store's audio accessory page.

If you're located in other countries, consider contacting Sony support to inquire about the availability of the self-repair kit, as they may sometimes be out of stock.

Encompass.com offers the X-5001-117-1 and X-5001-118-1 for the left and right earpads respectively, which appear to be available for purchase.