Sennheiser HD-414s here. The black mid to late ‘70s 600 Ohm version with yellow ear-pads, not the even higher impedance cream/blue late-60s version. Thankfully Sennheiser still make the foam earpads and the cable is the same fitting as a HD-600 so that can be replaced too (mine had hardened a bit so I replaced it). Still good cans in their own way, stunningly comfortable as they are so light and not ‘clampy’, and certainly a design statement. They really should re-make them in a hopefully more efficient and easy load form. I can empty an iPhone into these without getting them remotely loud, though my Sony Walkman Pro drives them fine.