Zenith Super Royal [Mod I] Vacuum Tube Hearing Aid
The Zenith Super Royal [Mod I] vacuum tube hearing aid was manufactured
by the Hearing Aid Division of the Zenith Radio Corporation of Chicago,
IL beginning in October, 1952.
The Zenith Super Royal [Mod I] and the
Zenith Royal [Mod I] were the last vacuum tube hearing aid models
produced by Zenith. Four months later (February, 1953) Zenith produced
their first transistorized hearing aid, the
The gold-colored anodized aluminum case was set over a black plastic
The Zenith Super Royal [Mod I] measured
4½” by 2⅜” by ⅞” thick, and weighed 7¾
oz. with the batteries. It used 3 vacuum tubes.
The round microphone grill (top center) had the Zenith crest in its
center. The pocket clips are on each side of the microphone grill.
Below the "ZENITH" name on the lower front is the t-coil (called
"phone magnet" in those days).