Cables are a bit of a controversial topic in the audio world but in my opinion, they do have an effect on the overall sound signature of your audio rig. I used to only use my 3rd-Gen iPod Touch as my audio source so I know how you feel. If you have the older charging connector, you're in luck, the LOD will bypass the amp of the iPod/iPhone but if you have a lightning connector, then you would need a DAC/AMP combo as the lightning adapter is all digital (will bypass both DAC and Amp). If you have a 30pin and want to upgrade the cable for it, it also depends what you want out of it. If you want the sound to be "Warmer" thaen go for a copper LOD but if you want the sound to be more "bright" and analytical(?) then go for a silver LOD. You can go for some of the ones on ebay by audiominor. Here is one review of one of their product.