Cleartone Model 700 Vacuum Tube Hearing Aid
Cleartone was the tradename of American Sound Products of
Chicago, IL.
The Cleartone Model 700 was released in November, 1950. It was a
one-piece unit, containing 3 vacuum tubes and a printed circuit board.
The case was either gold-colored or silver-colored.
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The back of the Cleartone 700 showing the model number. The Hi-Low
tone control is at the top left and the volume control at the top right.
The battery compartment door swings up from the bottom.
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