Sheepskin Replacement Ear Pads for Drop x Hifiman HE-5XX. Drops continued efforts to bring affordable planar headphones to the market has culminated in the budget friendly HE-5XX. Sporting an open-back design, the 5XX makes for a great budget entry to those looking for wide soundstage and immersive listening. Dekoni is happy to offer Elite Series earpads for the 5XX, giving you the tools needed to mod and finetune your 5X for maximum comfort and sound quality. When you take soft, supple sheepskin and wrap it in dense, slow rebounding memory foam, you increase isolation, comfort and sound stage. The sheepskin and foam wrap create a tight but comfortable seal on your head, even if you wear glasses, to ensure that our discerning listeners have a great headphone experience.