OK, these are just too gorgeous!

These beauties are Koss Pro/5LC, and are basically the same headphone as the Koss Pro/4AA that I resto-modded in a previous blog post.

The Pro5/LC has a squared-off earcup instead of domed, and features level-control dials along the bottom edge. (Thus Pro5/LC) I removed the dials and filled the gap with epoxy putty and painted it to match. It’s hardly visible.

Yes, they are for sale, and yes they are expensive! It’s a entire day’s work for me to build a set of these headphones. I sell the beige Pro4/AA for $550, and these are $600, because of their rarity, and the extra work involved filling the gap left by the removal of the level controls. They come with lifetime earpad replacement for $20, and a $50 flat-rate repair warranty.)