Abstract: A recording and reproducing disc driving apparatus has a main base which has seat portions for supporting a head, a carriage, first and second motors and a sensor and has at least one cut portion, and a sub-base for fixedly mounting the main base and having a dimension of the top surface which is the same as that of a given rectangular configuration of the driving apparatus. The at least one cut portion is formed by cutting a portion of the main base which does not contribute to support structual elements such as motors so that the top surface of the main base is smaller than that of the given rectangular configuration of the apparatus.

Abstract: An operating mechanism for a small portable cassette tape player/recorder which does not require separate operating buttons to play and record. Operation of the player is effected by pushing the cassette toward the recording/reproducing head. Playing/recording is stopped by pushing the cassette again. This push-push mechanism obviates the need for operating buttons, and decreases the size of the player.

Abstract: A portable stereo system includes a body unit having a tape player and a hinge portion and loudspeaker units having matching hinge portions. The player and loudspeakers can be coupled by a hollow hinge shaft which doubles as a battery holder, and the entire flexible assembly can be fastened around the user's waist or slung across his shoulder by a belt which is detachably fastened to at least the loudspeaker units. If desired, the loudspeakers can be omitted and the belt coupled directly to the hinge shafts.