Except for the batteries...mine eats them voraciously.

We put a battery-powered telephone headset amplifier on our hotel's
switchboard phone, so that we could hear better when the lobby got busy and
loud. It ate batteries daily, so I bought one of those 110 volt battery
eliminators at Radio Shack. It was cheap, and has worked flawlessly for
several years now.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"