The theory of quantum feedback networks has recently been developed with the aim of showing how quantum input-output components may be connected together so as to control, stabilize or enhance the performance of one of the subcomponents. In this paper we show how the degree to which an idealized component (an degenerate parametric amplifier in the low-frequency regime) can squeeze input fields may be enhanced by placing the component in-loop in a simple feedback mechanism involving a beamsplitter.