The Clarity HA40 Portable Telephone Handset In-Line Amp is a great, easy solution to modify phones that have a handset separate from the keypad so they are more hearing-friendly. It easily installs between the handset and the base and will increase incoming sounds up to 40 dB! It also has an adjustable tone control to help distinguish between similar-sounding words like "chair" and "share" as well as a boost button that mutes the microphone in the handset to eliminate background noise and feedback. Because of its small size, this easy to use telephone amplifier is ideal for traveling, as well as at the home or office. So make your incoming telephone conversations louder, clearer and easier to understand with the HA40 amp!
Designed for people with mild to severe hearing loss
Uses ClarityPower technology
Increases incoming sounds by up to 40dB
Adjustable tone control (600Hz-20.4kHz) amplifies specific frequency range for sound clarity and distinction between similar-sounding words
Boost button allows for even more amplification and eliminates background noise and feedback by muting microphone in handset
Compatible with most home and office telephones where handset is separate from keypad
Easily connects between handset and phone base-no wiring involved
Compact and portable
Includes battery