How does sound transfer from MP3 player to the headphone connected?
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wqxhouse

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I wonder the process is the following:
 
     1. MP3 files from flash
--> 2. Decoding MP3 to WAV by the processor
--> 3. Now WAV is gonna go through DAC, which turns the digital WAV to analog audio stream
--> 4. the stream goes through op-amp (Can be output from LO jack)
--->5. through headphone amp inside the MP3 Player(out from PO jack)
 
Is that right ? OR some missing point/process exists?
 
BTW, I heard the term pre-amp, post-amp. What roles do they play in the process?
Plus, is the headphone amp we usually talk about a pre-amp, post-amp, OR integrated model for both?
 
 
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wqxhouse

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i wonder the reason it end up with 0 reply.
 
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