The noise performance of BeO prototype hybrids for the SVXII detector is examined. Most measurements were carried out using SVX2b readout chips. The noise observed in various stages of ladder assembly is consistent with expectations from circuit simulation results. No increase in noise is observed when a hybrid is glued directly to the surface of a sensor. Posted to $CDF_PUB/cdf3839_beo_hybrid_test.ps http://www-cdf.fnal.gov/cdfnotes/cdf3839_beo_hybrid_test.ps Posted by mgs@cdfsga