One embodiment of the film acoustically-coupled transformer includes a decoupled stacked bulk acoustic resonator having a lower film bulk acoustic resonator an upper FBAR stacked on the lower FBAR, and, between the FBARs, an acoustic decoupler comprising a layer of acoustic decoupling material. Each terminal constitutes a connection between the integrated circuit and a peripheral device. The light string segments are fastened to the horizontal hoops; and tie wires run horizontally between the segments, at elevations intermediate the hoops and intermediate the uppermost hoop and the hub which is at the top of the tree. The DFE is selected for use if the quality metric is better than a threshold value, and the LE is selected otherwise.