Originally Posted by Parallel01
Hopefully these questions are easy to answer:
1) Is it better to adjust the volume on the mp3 player or the stereo itself?
Usually, it is best to run a player's output at the highest reasonble level that does not cause clipping or inconvenience further on down the audio chain.
2) Is it normal to have to turn the volume up to 66% on my mp3 player when I connect it to my stereo system? Because I find it very quiet if I go below that level.
+1 to tubetwister's comment that players don't use standardized markings on their controls and 66% can mean all sorts of different things.
3) If I turn the volume up more, will it cause distortion?
Probably not, but again YMMV.
A friend of mine said that he turns his mp3 up to 100% and it doesn't cause any,
My porable MP3 players work that way, as well. They are a Sansa Clip and a Sansa Fuze.
but I've read different things online...
Online sources vary at least as much as MP3 player volume settings! Someone online has probably told every truth and someone else has told every false claim, and someone a mixture of the two about any issue in audio.
a lot of people seem to recommend setting it to 50%.
I marvel at all these people who can hear differences between DACs and amplifiers which is difficult or impossible but don't seem to be able to tell when they hear something obvious like when they have turned something up to the poiint where it is generating gross distortion! ;-)