A method and apparatus is disclosed for a fast switching digital differential amplifier system useful in regenerating information signals in charge coupled devices. The amplifier system has a first capacitance at an input point which is charged and discharged in accordance with a binary "0" or binary "1" at the input. A second capacitance and an output capacitance is provided with a predetermined charge thereon. In the event of a binary "1", the predetermined charge on the second and output capacitance is retained while the first capacitance is discharged. In the event of a binary "0", the second and output capacitances are discharged via a current sink. A flip-flop is connected to the output capacitance for accelerating the discharge of the same. Switching transistors are additionally provided for activating the flip-flop to achieve the desired fast-switching.