I got Prism Sound Callia yesterday. It is that good that I am forced to think if instead of asking 'If Callia is comparable to Yggy', should I be asking 'If Yggy is comparable to Callia'. I mean, it is that good. I have not given this a final judgement though. But, whoever wins, it will not be on any scale, it will be just my preference towards any particular nuances of sound.
If we look at internet, WhatHiFi has given just three star to this product which certainly made me doubting their credibility now.
It is very clean, very accurate, you do not get to hear any artifact where you have to force your brain to analyze.
I am not very good at explaining sound but once you listen to this, you will not want to analyze and just listen to the track.
And, on top of all these, universal voltage, no fuss Android and iPhone connection...these all make this a fantastic DAC.
I know I am not good at writing about sound so feel free to throw in any questions that anybody may have and I will give them my best shot.