Koss Stereophones
KPH40 Utility
USD 39.99
Koss KPH40 & P/21 Headband Suspension Pad Mod Kit
GBP 6.90
Retrospekt
Koss KPH40 Utility Rhythm Beige On-Ear Headphones
USD 39.00
Hart Audio Cables
HC-KPH balanced headphone cable for Koss KPH40 headphones
USD 35.00
GullSound
Koss KPH40 Utility headphones on-ear 3.5mm wired interchange
GBP 43.99
Lowpricesupply
Koss KPH40 Utility On-Ear Headphones, Detachable Interchange
USD 39.99
Sorelle One Sports
Koss KPH40 Utility On-Ear Headphones, Detachable Interchange
USD 49.37
Geekria
Geekria Replacement Ear Pads for Koss Porta Pro, PP/ KPH40/
USD 13.99