From the 15.32 thread...... http://www.head-fi.org/t/648386/audio-gd-nfb-15-32-delivery-impression-thread/15#post_9621461
Not got mine yet but maybe it has value to 11.32 users as well.....OP could not up his photo so he sent me it.
Hey U guys... Want to to try something which help to improve the sound quality of this DAC !!!
This is something can be done with both 11.32 and 15.32 (my friend hav also try with other brand DAC)
** For the guy who did't used optical port **
1. Open up the case and just take out (unplug) optical connector plug !! U will see the different !!!
note that!! no special tools required just ur finger is enough or if u hav a big hand screw driver can help)
The Reason why sound change is because The optical port use the same 5V current as DACs chip as we know that even we didt use them but it will work all the time to dectect if the optical cable is connect or not. ____Skip long explanation ____ It disturb DAC chip .
For me after done this the sound is a lot more clear n smooth u can notice this different immediately !!!
In the case that u want to use optical cable or did't like new sound u can just plug it back whenever u want
** If anyone want the picture of what i hav done just PM me ur email ^^ **
Credit of this method to Thai Engineer that i know ^^