Massdrop Unlocked: Superlux HD668B for $38~ shipped

Fully unlocked at members-only site Massdrop are the Superlux HD668B headphones offered for $33 plus $5~ flat shipping. This offer ends in about five days from today.

Also there, but not fully unlocked, are the Beyerdynamic Custom One Pro that could go as low as $165 shipped. This too have five days left from today (today = blog-posting date).