To get a good sound sound quality from top mini jack plug has always been a challenging issue for those very much condensed electronic device that are PDAs. Till now, iPod was at the top in terms of interference protection and global sound quality. But here is the news, iPhone 3GS is maybe even better, and that is very interesting and tends to prove that Apple is definitely engineering its devices with melomanes and music fans in mind.
And that is a VERY good news !
I could also test Android Magic sound quality and guess what : it’s junk, absolutely bad, with a permanent high level background noise.
So no over way to go for music now : iPhone 3GS
iPhone top jack sound quality is excellent and at top level with a very sensitive earphones like Shure 500. Nearly no differences with the line-out cryo dock + Tomahawk amplifier which also is first class.