Vintage Koss ESP/9 electrostatic studio monitor headphones with original Koss Model E/9 electrostatic stereophone energizer.

Power cable is NOT included. Unit is untested due to missing power cord.

Headphones, energizer, and attached cables are present. Shows cosmetic wear consistent with age (see photos). This is a vintage electrostatic system and is being sold as-is for parts or restoration.

Please review all photos carefully before purchasing.

This wording protects you and still keeps buyers confident.

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Item Specifics

• Brand: Koss

• Model: ESP/9

• Type: Electrostatic Headphones

• Connectivity: Wired (via energizer)

• Features: Vintage, Studio Monitor

• Included: Headphones & Energizer (No Power Cord)

• Condition: Used (Untested)

• Country/Region of Manufacture: United States