Abstract: A flexible apparatus and method for producing synthetic fibers in either the form of a single thread bundle on a bobbin, or as a combined thread strand in a storage can, without rearranging the spinning plant. This is accomplished by extruding the threads, one bundle from each of a series of aligned spinnerets, downwardly through ducts carrying a stream of air, and mounting directly beneath the ducts, in alignment therewith, an elongated take-up machine. The take-up machine has a row of winding devices on one side and a row of combining rollers on the other. The thread bundle from each spinneret is directed through a duct arrangement either to one side or the other of the take-up machine. All spinnerets may feed one side, or the other, or the production can be mixed with some spinnerets feeding one side and some the other, depending upon whether the market demand is for filament yarns or staple fibers.