
Pair of ELECTROSTATIC HEADPHONES

Pair of ELECTROSTATIC HEADPHONES, Model ESP-6A, by Koss Electronics Inc, USA, Serial No. 4820123, c. 1970, complete with operating manual and technical specifications
Pair of ELECTROSTATIC HEADPHONES, Model ESP-6A, by Koss Electronics Inc, USA, Serial No. 4820123, c. 1970, complete with operating manual and technical specifications