WTF is with the million different types of models of the same headphone?
a take it thats the newest one...
Sennheiser - HD 25 II Pro Closed Back Headphones
and then the same spec but cheaper???
Sennheiser - HD 25 II Closed Back Monitoring Headphones
then a HD25 C ??
SENNHEISER HD 25 C MKII - HEADPHONES- A PAIR OF
then just the HD25's
Sennheiser HD25 Closed Back Headphones | Andertons
Had this problem before when I thought I was buying the HD 25's (whatever model) on the cheap and it turned out the output volume on them was well lower than the other models which made it shit for mixing in clubs