Yes I emailed Ditting and they sent me some instructions . I can post if you would like them . <| sep |> Unconventional , but in TF 2 , I had won a Strange Machina in a giveaway . I was oblivious to its value , which was about 17 keys or something , easily the most expensive thing I ' d ever owned in tf 2 . I didn ' t like the Machina as a weapon , so I traded it for a few other stranges for weapons I did like , which just so happened to be worth way less than 17 keys I think they totaled to about 2 keys worth at most . I was so sad when I learned its value later , and also pretty mad at the person who I traded with , but I wasn ' t sure if I should be angry at them . <| sep |> Cost didn ' t increase , demand did . <| sep |> hyWn 2 HbCf 1 oOpenback models can often sound more airy , clear or spacious versus their closed counterparts . In a sense they sound more like speakers , you feel like the sound is coming from around you rather than right next to your ears and can be more immersive and natural . Closed headphone offer isolation and doesn ' t leak sound . That means closed can be used in noisy environments to block off sound and doesn ' t disturb others . Don ' t use open headphones on transport such as planes or buses at it ' ll just annoy people around you .