Portable headphone amp/dac suggestions?

[Ant]

Hello, I'm looking for suggestions on a portable headphone amp/dac for office use. I have a classic 160gb iPod (spinny disk type) ripped lossless and a pair of AKG K550's. Looking under the £100 mark with LOD input. Battery favourable but mains is an option. Any hidden gems out there? Thanks

 

[Bluedroog]

The Fiio E17 fits the bill, I have one and it is a good bit of kit. That said I don't think you can take a digital signal out of the ipod with all but a very few models as those muppets at Apple insist on a sizeable fee to do so.