OFC Audio Cable For Sennheiser HD 230 250 414 420 425 430 440 II 540 Headphone | eBay
Sennheiser HD 4.40 BT Affordable Over-Ear Sealed Bluetooth Headphones Page 2 | Stereophile.com
Looking for an easy solution to replace the earfoams on my old Sennheiser HD 440 IIs. The plastic earcup is ~4 1/4 in diameter. My daughter is practicing electric guitar a lot. : r/sennheiser
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Sennheiser HD 4.40BT Headphone Review - Consumer Reports