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@ portable : ihp 120 | ipod Touch 32go + custom HeadSix (with added 75ohm resistor for the output) + er-4p (made to er4s with my custom HeadSix, thanks Dr Meier !)

@ home : squeezebox v3 > Lavry DA10 > HD-650 / ER-4S
Now Building : balanced JISBOS amp/buffer, DAC, classe D bi-amp, speakersFS...http://www.head-fi.org/forums/f43/fs-220v-yulong-minidac-mod-300-190euros-shipped-308973/