cv01.jpg (8206 bytes) Walker Ameriphone, a Division of Plantronics Inc, Chattanooga, Tenn, offers the XL-40 Amplified Telephone. The unit delivers up to 43+dB extra amplification and features a separate adjustable tone control (500-2,400 Hz) for high-frequency sounds. (800) 874-3005; [email protected]; www.ameriphone.com.