Because they are extremely inefficient. Most amps are class A,B, or A/B which iirc only output something like 30% of the power they use to the speakers. Class D and T? are much much more efficient (90 ...
Looking for a home in DVD receivers and lifestyle micro systems where space is very limited, the TDA892x family of single-chip, class D audio amplifiers are said to be one of the few such devices ...
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