Regarding Class-D Amplifiers

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Hello

Class-D amplifiers normally drive the 8Ω speakers.So they are normally Power Amplifiers in many applications.

Can we use them as a preamplifier to amplify the signal to line level?

If I have to drive the Output of Class-D to Class-AB (LM4780) Power amplifier,Is it possible to drive like that?

If not possible what is the alternate solution?
 
All amps would be classA if not for its massive inefficiency. For a preamp driving a very light load, the inefficiency isn't an issue. Hence preamps can be classA without significant penalty. Why would we need them to be classD?

You can use an LM4780 in a preamp if you like, it'll probably run pure classA. It might have too much gain though.
 
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