A reversible electric motor driven pump mounted within a housing with one end in communication and seals with the ear canal when inserted therein has a drive shall employing pump controls operably associated with the electric motor to selectively control the start, stop, operating speed, position and direction of the drive shaft in either a clockwise or counterclockwise direction to drive a rotating gear with lever structure configured to reciprocate when driven by the drive shaft to selectively compress the bellows and piston forcing air through a port to create positive pressure is the ear canal in one mode, and expand the bellows and harmonic piston to withdraw air from the ear canal and create negative pressure therein in another mode.