An audio system includes a general-purpose computer in the audio signal path to provide, or to enhance, pre-amplification functions. The virtual machine combines said sub-query results by the CPUs and said primitive results by said MCPs to a final query result. The radiator and the holder are located with a specified space in-between, and resin columns are placed in the specified space. A processor-based system having a focused cooling duct. Alignment positions are selected in which steps in a plot of the increment over the area of the detector are minimized andor aligned with the rows and columns of pixels. The inclined upper surface is inclined downward in a gravity direction toward a side end of the beam in a cross-section of the beam.