Fanstel develops and manufactures products for the hard of hearing, such as amplified phones that deliver loud, clear business calls. The Fanstel 1 and 2 line Amplified Business Speakerphones are sophisticated amplified telephones that can digitally adjust frequency specific volume levels so that any user especially those working in extremely noisy environments can comfortably and clearly hear a callers voice. Fanstels EZPro 56dB Amplified Phone uses sophisticated frequency based technology to give you clear comfortable amplification only where its most helpful reducing or eliminating distortion echoes and squeaking.