Might want to see if this will work for you - HRT LineStreamer+
http://www.hirestech.com/product/?pid=100
I use a different model a HRT istreamer to use my ipod classic in my headphone system . Good sounding DAC for the money
http://www.hirestech.com/product/?pid=100
I use a different model a HRT istreamer to use my ipod classic in my headphone system . Good sounding DAC for the money