[BloodyPenguin]

Not sure if this is old news or weird news.  Just came across these and had no idea Koss made them or if they are real. 
 
 
 

Koss CL-PRO:​

 

 
 
 
Koss CL-2:
 

 
 
 
 
 
Koss CL-3N:
 

 
 
 
 
Koss CL-4:
 

 
 
 
 
Koss CL-5:
 

 
 
 
 
 
 
Koss CL-9:
 

 
 
 
 
 
 
 
Koss CL-10:
 

 
 
 
 
 
Koss CL-19:
 

 
 
 
 
Koss CL-20:
 

 
 
 
 
 
Koss CL-24:
 

 
 
 
 
 
 
 
Koss CL-80:
 

 

[BloodyPenguin]

I wish they made a Koss CL KSC75!  

 
.. 

 

[axtran]

YAY NECRO!

I just bought a few different headphones from the list! CL-5's and CL-80's stand out as "Institutional" headphones. Everything seems to use the same drivers as the Porta Pros for the most part, and these are clear in order to be clear of contraband within a prison. To be honest, the CL-80's sound way better than I thought that they would, and I'm more than happy to say that they sound pretty awesome. They actually sound almost the same as StratoKOSSters that I have...