An electric fader drive unit comprising: a drive portion that is adapted to drive an electric fader by supplying drive power to the electric fader; a fader position control portion that is adapted to indicate a target position (F1, F2) of the electric fader; and an electric fader control portion that is adapted to receive an indication of the target position (F1, F2) from the fader position control portion and to control the drive portion to move the electric fader to the target position (F1, F2), wherein: the fader position control portion is adapted to detect a distance between a current position of the electric fader and the target position (F1, F2), to indicate a high speed movement mode as an operation mode in a case in which the distance is not less than a predetermined value, and to indicate a silent movement mode as the operation mode in a case in which the distance is less than the predetermined value; and the electric fader control portion is adapted to control the drive portion to change the drive power from a nonzero preparation drive power (Ppre), that is less than a minimum drive power (Pmin) that is a lowest drive power required for moving the electric fader, to a silent drive power (Ps) not less than the minimum drive power (Pmin) in a case in which the fader position control portion indicates the silent movement mode, and is adapted to control the drive portion to change the drive power from the preparation drive power (Ppre) to a base drive power (Pb) that is more than the silent drive power (Ps) in a case in which the fader position control portion indicates the high speed movement mode. a drive portion that is adapted to drive an electric fader by supplying drive power to the electric fader; a fader position control portion that is adapted to indicate a target position (F1, F2) of the electric fader; and an electric fader control portion that is adapted to receive an indication of the target position (F1, F2) from the fader position control portion and to control the drive portion to move the electric fader to the target position (F1, F2), wherein: the fader position control portion is adapted to detect a distance between a current position of the electric fader and the target position (F1, F2), to indicate a high speed movement mode as an operation mode in a case in which the distance is not less than a predetermined value, and to indicate a silent movement mode as the operation mode in a case in which the distance is less than the predetermined value; and the electric fader control portion is adapted to control the drive portion to change the drive power from a nonzero preparation drive power (Ppre), that is less than a minimum drive power (Pmin) that is a lowest drive power required for moving the electric fader, to a silent drive power (Ps) not less than the minimum drive power (Pmin) in a case in which the fader position control portion indicates the silent movement mode, and is adapted to control the drive portion to change the drive power from the preparation drive power (Ppre) to a base drive power (Pb) that is more than the silent drive power (Ps) in a case in which the fader position control portion indicates the high speed movement mode. the fader position control portion is adapted to detect a distance between a current position of the electric fader and the target position (F1, F2), to indicate a high speed movement mode as an operation mode in a case in which the distance is not less than a predetermined value, and to indicate a silent movement mode as the operation mode in a case in which the distance is less than the predetermined value; and the electric fader control portion is adapted to control the drive portion to change the drive power from a nonzero preparation drive power (Ppre), that is less than a minimum drive power (Pmin) that is a lowest drive power required for moving the electric fader, to a silent drive power (Ps) not less than the minimum drive power (Pmin) in a case in which the fader position control portion indicates the silent movement mode, and is adapted to control the drive portion to change the drive power from the preparation drive power (Ppre) to a base drive power (Pb) that is more than the silent drive power (Ps) in a case in which the fader position control portion indicates the high speed movement mode.