Pressure is force/unit of area. For a phono stylus the force is small but the contact area is very, very small. Result, high pressure.
For another example,consider ice skates. Ice occupies more volume that liquid water, hence high pressure lowers the melting point (Le Chatelier's principle). Since the contact area of the skate is small, the pressure is high. High enough to melt the ice temporarily and lubricate the skate.
For another example,consider ice skates. Ice occupies more volume that liquid water, hence high pressure lowers the melting point (Le Chatelier's principle). Since the contact area of the skate is small, the pressure is high. High enough to melt the ice temporarily and lubricate the skate.