Sennheiser HD 400 PRO Open Back Dynamic Headphones for Studio, Mixing, Video, Audio Production, Twitch, High Definition music listening, removable 1/8” cable w ¼” adaptor | Digital DJ Gear
Amazon.com: GEEKRIA Audio Cable Compatible with Sennheiser HD 599 SE, HD 599, HD 598, HD 598 SE, HD598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 559