I will call it IPod 5th Gen Headphone capless output MOD , iPHD
With this mod you will have the best audio quality ( if not, the simplest audio path ) that can be achieve with the Wolfson audio codec. The capless headphone output is achieved by using modifed rockbox firmware to enable WM8758's capless output configuration.
For how to perform the mod, please check the details:
If you want to keep the dock pin lineout, either stock or iMod, A swapped mod is available, check this MOD with lineout
Neither mod is compatible with stock firmware, nor the original rockbox. The two versions of rockbox firmware are not compatible, so choose one according to wiring.
Edited by beyondwind - 2/28/14 at 5:28pm