Aurex Personal Amplifier The Aurex “P-A” personal amplifier was produced by the Aurex Corporation of Chicago in 1948. It was a small battery-operated 3 vacuum tube amplifier encased in a small handheld trumpet-like device. It was advertised for use at concerts by people with normal hearing, but it certainly would have helped hard of hearing people too. Therefore, it qualifies as an early assistive listening device (ALD). In many respects, the Aurex P-A was the forerunner of the personal amplifiers of today such as the Williams PockeTalker and the Clear Sounds Sound Wizard II. |  | Click picture for larger view | | |   | | | |
