(under subclass 250) Subject matter including a plurality of stages of amplification, such that the input signal for each stage, except the first, is the output of the preceding stage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for plural diverse-type amplifying devices which may be cascaded and which may include a semiconductor-type amplifying device.
70+, for series energized vacuum tube amplifiers which may be cascaded.
88+, 92 and 98+, for cascaded amplifiers with signal feedback.
150, for cascaded vacuum tube amplifying devices of different characteristics.
151, for cascaded vacuum tube amplifier devices with means to bypass a stage. 152+, for cascaded vacuum tube amplifier means differently coupled between stages.
157+, for interstage coupling between stages of amplifying devices.
