Hamilton Electronics 6 Station Stereo Listening Center HH/JBP-6SV/HA5.

This listening center includes:
(6) Hamilton SC-7V Headphones:

The Hamilton SC7V Headphone with individual volume control and 3.5mm stereo plug. New soft leatherette style washable, replaceable ear cushions, new easier-to-wear lighter design with swivel ear-cups and soft coil,6 ft braided nylon cord all contribute to longer fatigue-free use. Now in easy to mark medium gray colors. Use in groups with a listening center jackbox.

Specifications:

Volume control
Impedance: 170 ohms
Speaker drivers: 40mm cobalt magnet type
Headphone frequency response: 18-20k Hz
6 ft braided nylon cord
One (1) year warranty.

(1) 6 Position Jackbox with Individual Volume Controls
(1) Headphone Rack, Steel with Dust Cover