The PS Audio HCA-2 is called a "Hybrid Class A" by manufacturer, but I am pretty sure it is not "hybrid" in terms of a tube stage (usually input) and a ss output, like Counterpoint, NYAL Moscode, Llano Trinity and some others. I think it may be "hybrid" in terms of traditional analog ss input stage and digital output stage, as the web site mentions JFET input and SDAT output. I am going to compare the Llano to McCormack 0.5 Rev A in my system sometime very soon, as I have a Llano enroute. Will post thoughts with MY system after it arrives.