The Amplicom TA10 telephone handset amplifier is a universal amplifier suitable for corded telephones. A useful product to substantially boost the listening volume of your existing telephone by up to 45dB. The amplifier connects between the base unit and handset of your corded telephone for significantly enhanced sound quality. The tone of the caller’s voice can also be adjusted in steps to suit your particular hearing loss, this is especially useful if you have a high tone frequency loss. Simply press a button to further boost the caller’s voice.