a liquid jet apparatus comprises a recording head including a plurality of discharge ports for discharging the liquid therethrough , and a plurality of energy generating units respectively arranged correspondingly to the plural discharge ports for generating energy used for discharging the liquid . a driving unit is provided for driving the energy generating unit and has at least two selectable maximum driving frequencies , the driving unit being able to drive each energy generating unit at the maximum driving frequency . a drive control unit selects a maximum driving frequency from the selectable maximum frequencies .