I have a pair of Sennheiser Electrostatic headphones - HE60 / HEV 70 - new in 1996.
They operate very well.
I recently noticed a small scuff (not a cut) on the outer edge of the HE60 cable which has removed a little bit of the outer plastic cover. No underlying cable/wire is revealed but in that small area (say 3-4 sq mm) the plastic cover is less thick.
The flat cable has 6 wires running through it - I understand with the following roles: R+ / R bias / R- / L - / L bias / L+.
The scuff is next to the R+ cable.
As these headphones require a very high voltage to operate (400v dc) do you think they will be ok to use or should I have the cable replaced?
