Hello to all,
I would like to add some info about this headphone :
- it's a CES (Casque ElectroStatique) from Audiotec (France).
- the version presented is the electret version (from Audio-Technica, ATH-5 -> ATH-8 )
- the left-right identifier is the grey plastic on the cable
- there is no serial number because the driver aren't from Audiotec
- the old PCB is one of the two electrode from the original electrostatic headphone, if you see my photo you'll understand
- this headphone wasn't suppose to have an electret driver originally
- the six pins plug is silver plated so no bad oxidation.
- the 300V bias is for the electrostatic version only.
Here's the photo of the original (1972) version (full electrostatic) :
Poussi_Pousse