Worst headphones I have ever heard? Some stupid dinky ones from the dollar general. I needed them to house some new drivers for a weekend project.
Worst ever headphones I have listened to that could be considered real headphones? I do not know, but I can say that I know of one that is terribly over priced and poplar that sounds pretty bad.
Sennheiser HD800s. Don't get me wrong, they have great clarity, and have great sound stage.......but everything else is pretty bad. It seems like they sacrificed bass, mids, and any hopes of having a natural sound all for the sake of transparency.
I have tried different amps, dacs, cables, everything. I simply can not find a way for these things to have the same full sound that even the HD600 has.
The worst thing is the price. For 600 bucks they would be ok, but for 1300+........no.