  The Large Enriched Germanium Experiment for Neutrinoless $\beta\beta$ Decay
(LEGEND) is a future ton-scale experimental program that will search for
neutrinoless double beta decay ($0\nu\beta\beta$) in the isotope $^{76}$Ge with
an unprecedented sensitivity. To achieve the projected discovery sensitivity at
a half-life beyond $10^{28}\,$yr after about ten years of data taking, it is of
utmost importance to operate in a background-free environment. This can be
supported by using highly integrated readout electronics such as
application-specific integrated circuit (ASIC) technology. In this work we
investigated the properties and electronic performance of a commercially
available ASIC charge sensitive preamplifier, the XGLab CUBE preamplifier,
together with a p-type point contact high-purity germanium detector.
