Long RCA interconnects to the headphone amp?

Zaike,
Thanks for the input.
I also want to know if there will be any difference if I use some RadioShack grade interconnects and higher quality pro- or audiofile grade.
I found headphones is the best way to audition any component especially analogue.
I can easily spot the G-spot when adjust VTA and anti-skate.
Right now they sound bright. Will I be able to rectify this situation using a high quality wires?