A magnetic tape recording and/or reproducing apparatus suitable for cooperation with a magnetic tape (1) accommodated in a cassette (10) is provided with a tape guide device (18) which comprises two substantially cylindrical tape guides (19, 20) each mounted on one of two movable supports (21, 22) for withdrawing a portion of the tube from the cassette and wrapping it around a tape guide drum (2). For moving the two supports there is provided a wire drive arrangement (38) which comprises two alternately rotatable wire drums (39, 40) and three wires (41, 42, 43), the first wire (41) passing from the first write drum (39) to the first support (21), the second wire (42) passing from the first support to the second support (22) and the third wire (43) passing from the second support to the second wire drum (40). For simultaneously moving the two supports from their rest positions to their operating positions the first wire drum (39) can be driven and for simultaneously moving the supports from their operating positions to their rest positions the second wire drum (40) can be driven. (FIG. 1).