The only use in a Ipod is the entire virtual features it has. But then my S9 plays other things then Audio and all I do with it is play Audio. So a ipod would fall short in the rest of the stats
My S9 driving my T50RP (ortho) does fine. Which take a SH!$ load of power. My receiver hardly has enough power and the S9 carries them along just fine.
I've tested my T50RP on a ipod, sound was crackled to the last note and at full power I couldn't even get into the volume curve.