Make any handset an amplified handset. Installation is easy! Just plug the In-Line Amplifier into the jack on the phone for the handset, and plug the handset cord into the In-Line Amplifier.
Works with almost any phone* and any type of handset
Merlin, Carbon, Dynamic, Electret or Reversed Polarity.
Easy to use slide volume control on top stays where you put it.
Battery-Powered regular 9V battery (included) lasts about a year under normal use.
*Before You Order:
Some GE, RCA, and dial-in-handset phones are not compatible.