This is a special order item and may take 2-4 weeks to ship from the Manufacturer. Plug Amp w/Coil Cord - This amplifier is the perfect choice for any headset and works with most carbon-based telephone systems such as the Avaya Callmaster III. You will experience what feels like a face-to-face conversation even in the toughest environments. Adjustable three position switch volume control for preferred user settings.
