The pressure wave would likely destroy your hearing because of the additional energy that would be required to lift a more massive object like a golf ball.
Maybe not. The bass at a dubstep show hits your chest really hard, I can imagine it floating a golf ball. You can do some simple DSP to cancel out most of the amplitude too
-> 340m/s / 0.005m = 68000Hz.
If we limit the frequency to above human hearing range (>20000Hz) then maximum size of objects held in this way would be about 1.7 centimeters.