Selling some of my collection to help fund a project that I'm working on.-----------------------------Very good condition. Some parts of the top of the headband have some marks that might be able to be cleaned off. The right side has some engraving(?) on it. The old cable pooped out so I ripped off the cable off of a Yamaha ortho (which btw is a pretty nice cable).Also another solid planar from Fostex from the 70s or so. With no mods, they're smooth and fairly natural sounding.About the mod: I have Shure SRH1540 earpads on them. I did a number of internal mods on them in working with different damping schemes. I tried to tune them the best I can, but I eventually just EQ'd them to my liking + the mods. I will send you my EQ settings on EqualizerAPO/Peace GUI if you like.Measurements without EQ: https://i.imgur.com/FaueNWA.png Measurements with EQ: https://i.imgur.com/ifsGKCg.png Mods are reversible and you can play around with them if you want! The drivers don't have to be desoldered to mod the earcup. The driver is attached to the front baffle and the back earcup is separate which makes modding very easy.-----------------------------From a smoke-less and pet-less home.Ships from MN.Feel free to PM me any questions regarding the headphones!