Can I plug my iPod directly into an amp?

I have my 10GB 3rd Gen iPod connected using cheap 1/8" to RCA connectors to an Adcom GFA545II, which power Meadowlark Vireo bookshelf speakers.
Incorrectly set up (due to space constraints) in a small office, I've been stunned with the involving sound quality that results. One has to be careful to ensure the amp is OFF when connecting and disconnecting the iPod, otherwise, this can be done. And no, they're not lossless files, just 2,500 AAC files on an old player. Of course it can get better, perhaps using the dock connector and preamp. But I'm pretty picky and my Otolaryngologist tells me I have "perfect" hearing, so you owe it to yourself to give it a try. The pleasure this setup yields is constantly refreshing and gets me through long days at the office.
Cheers!

My iPod (30Gb) is connected via the docking station using a 'M' product as the IC in the AUX jack of my preamp. Sounds good but not as clean as a CD. Most of my music is burned using the standard apple format. I had contemplated redoing all using ths LossLess format but I have too many songs (4000+) to just sit doWn and redo.

I would try a pair of EVS Ultimate Attenuators before doing such a scheme, it would seriously save some repair money from overloading the amp and it can happen, if one is not careful.
I doubt that the IPOD would sound like crap through the headphone output. Do you have a cable and also the Ipod to try or are you thinking about getting one?

w/ regard to dock out vs phone out...yes gain difference. as such when using the dock out u need to crank things up via your volume control of your main system,,,but it does sound a tiny bit better...I wish there was a digital out so that I could use my own DAC....