Received mine today. Jeez, right out of the box it sounded great. Interesting comparison with my AGD Tempo. Sonically the Coda has better micro and global dynamics; is more nuanced; has better imaging depth; and just sounds more musical / real. None of this is a vast difference, but there clearly is a difference. Keep in mind this is the first version of the Tempo. There is an update which I will get.
Regarding the 5.5’s power into 4 ohms, the Tempo is rated 200 into 4, 100 into 8, yet I have the volume control lower on my preamp into the Coda for the same subjective output volume. And it seems to advance volume more rapidly than into the Tempo. I’m not technical with electronics, so who knows. Maybe the Coda has more input sensitivity (balanced input). But there certainly is plenty of power going into my Caladans.
One criticism - the indicator lights are way too bright. I’ve had to cover them.
My system: Aurender n200, PS Audio DSD Mk2, Backert Labs Rhythm 1.3, Coda S5.5 / AGD Tempo, Clayton Shaw Caladans / Fyne F1-8, and a sub.