Beltone "Lyric" Behind-the-Ear Hearing Aid The Beltone "Lyric" behind-the-ear hearing aid was produced by the Beltone Electronics Corp. of Chicago, IL in 1984. The forward-facing microphone port is in the clear plastic above the ear hook. The "Lyric" could be fitted with an optional directional microphone. The adjusting screw (underside center) if for setting the power output. It is labeled "SSPL" and ranges from 95 to 120 dB. The words "Beltone" and "Lyric" are molded into the side of the case (right). | 
