Fake #. 1:
1 - The Headphone picture on the metalcal does not match ours. Top of headband is all one line on fake one.
2 - Mic screw is a little different on front & back.
3 - Plastic piece that holds the comfortZone label is different. No texture on outside rim. Does not have a ledge under the blue slider.
4 - Plastic piece (earcup w/metalcal ring is different). On inside we have 3 gate circles. Large, med, small. The fake has 3 all the same size. Our 2 top circles are smaller than the fake one.
5 - Metalcal ring is rough looking. Where the ring sits does not have the slope.
6 - The right cup on the fake has a cavity no. but it is no. 4 dull. The Koss phone has a no. 1 but shiny where the no. is.
7 - The “KOSS” embossed on the plug is not very deep as on ours. Also does not have a trash can label on cord.
8 - The impedance reads 30 to 33.7 ohms as where Koss reads between 60 to 63.4 ohms.
9 - Element cups, terminal board covers & grille plates are different.
10 - Cushions are a little larger & a slight difference in color. Do not have the crease on top like ours.

Packaging:
1 - Different backcards.
2 - Inner tray does not have the indents where the headband lays.
3 - Green color is not the same on top insert.
4 - Carrying pouch is different than Koss. Lines are in where “KOSS” is embossed.
5 - Headphone is loaded backwards in tray.