Before revision: It is commonly used in the biasing of push-pull amplifier stages , where one benefit is thermal compensation: The temperature-dependent variations in the multiplier's V, can be made to match variations occurring in the V of the power transistors by mounting to the same heat sink.
After revision: It is commonly used in the biasing of push-pull output stages of amplifiers , where one benefit is thermal compensation: The temperature-dependent variations in the multiplier's V, can be made to match variations occurring in the V of the power transistors by mounting to the same heat sink.