Plug-in connector arrangement having a plug-in connector and a cable connected to the plug-in connector, wherein the cable has a first and a second insulated inner conductor (4.1; 4.2), a shield surrounding the two inner conductors (4.1; 4.2), and a sheath surrounding the shield, the first and the second insulated inner conductor (4.1; 4.2) are not covered by the shield and the sheath in an end portion of the cable, the plug-in connector has an outer-conductor sleeve, and a first and a second inner-conductor contact (12.1; 12.2) arranged within the outer-conductor sleeve, the first and the second inner-conductor contact (12.1; 12.2) have a respective plug-in portion (13.1; 13.2), in which the first and the second inner-conductor contact (12.1; 12.2) can be connected to a complementary inner-conductor contact of a mating plug-in connector, a connection portion (14.1; 14.2), in which the first inner-conductor contact (12.1) is electrically conductively connected to the first inner conductor (4.1) and the second inner-conductor contact (12.2) is electrically conductively connected to the second inner conductor (4.2), and a transition portion (15.1; 15.2), which connects the plug-in portion (13.1; 13.2) to the connection portion (14.1; 14.2), wherein the first and the second inner-conductor contact (12.1; 12.2) are arranged parallel to one another in the plug-in portion (13.1; 13.2) and in the connection portion (14.1; 14.2), characterized in that the first and the second inner-conductor contact (12.1; 12.2) have a first contact distance (a) in the plug-in portion (13.1; 13.2) and a second contact distance (b) in the connection portion (14.1; 14.2), and the first contact distance (a) is larger than the second contact distance (b), and in that, in the transition portion (15.1; 15.2), a transition from the first contact distance (a) to the second contact distance (b) is continuous over a length of the transition portion (15.1; 15.2), in the end portion, the first and the second inner conductor (4.1; 4.2) are arranged parallel to one another within the outer-conductor sleeve and at a distance from the outer-conductor sleeve at a line distance (c) which is the same as the second contact distance (b). the cable has a first and a second insulated inner conductor (4.1; 4.2), a shield surrounding the two inner conductors (4.1; 4.2), and a sheath surrounding the shield, the first and the second insulated inner conductor (4.1; 4.2) are not covered by the shield and the sheath in an end portion of the cable, the plug-in connector has an outer-conductor sleeve, and a first and a second inner-conductor contact (12.1; 12.2) arranged within the outer-conductor sleeve, the first and the second inner-conductor contact (12.1; 12.2) have a respective plug-in portion (13.1; 13.2), in which the first and the second inner-conductor contact (12.1; 12.2) can be connected to a complementary inner-conductor contact of a mating plug-in connector, a connection portion (14.1; 14.2), in which the first inner-conductor contact (12.1) is electrically conductively connected to the first inner conductor (4.1) and the second inner-conductor contact (12.2) is electrically conductively connected to the second inner conductor (4.2), and a transition portion (15.1; 15.2), which connects the plug-in portion (13.1; 13.2) to the connection portion (14.1; 14.2), wherein the first and the second inner-conductor contact (12.1; 12.2) are arranged parallel to one another in the plug-in portion (13.1; 13.2) and in the connection portion (14.1; 14.2), characterized in that the first and the second inner-conductor contact (12.1; 12.2) have a first contact distance (a) in the plug-in portion (13.1; 13.2) and a second contact distance (b) in the connection portion (14.1; 14.2), and the first contact distance (a) is larger than the second contact distance (b), and in that, in the transition portion (15.1; 15.2), a transition from the first contact distance (a) to the second contact distance (b) is continuous over a length of the transition portion (15.1; 15.2), in the end portion, the first and the second inner conductor (4.1; 4.2) are arranged parallel to one another within the outer-conductor sleeve and at a distance from the outer-conductor sleeve at a line distance (c) which is the same as the second contact distance (b).