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Old 09-05-2009, 01:40 PM
saratoga saratoga is offline
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Join Date: Apr 2007
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Pretty much, except the "clean" part. It just takes the signal coming out of the MP3 player (clean or not), presents some really high impedance to the DAP (100s to 1000s of ohms), and then increases the voltage.

Basically a headphone amp gives you whatever the "unloaded" RMAA test gives you, except it does it while driving headphones. Plus maybe a little bit of extra noise if the amp isn't very good.
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