Hi guys,im I'm doing some upgrade project with my preamp,does anyone know if a bipolar opamp can just directly replace by jfet opamp? Because I've read alot that jfet opamp sounds better than bipolar opamp,is it true?because they have much lower noise.

Hi,guys,i just check about the ibasso d-zero mk-ii and fiio e18k kunlun...both of them are portable dac/head.amp,one problem of them they can work with android 6.0?or have to update,and which you guys more like about,bass,clarity,clean and imagine.