any input on comparison between fiio e18 and hippo cricri+   hippo cricri+ also works for usb dac to android right?

~~Hi..am new here. Would like to ask for recommendation for portable headphone amp/dac Using it with sennheiser mx980 with samsung note 2 and tablet surface pro. Got some opinion that portable headphone doesnt improve the sound but mearly making it sound louder. I come across this fiio e07k and...

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