Ok, done some more test now that the firmware is updated to 2.2a.
DDhifi MFI09 : turns on but it reboots as soon as music is played , both 1.70 and 2.2a behaves the same
OEAUDIO OEOTG : turns on but it reboots as soon as music is played, don't work with 1.70, works fine with 2.2a
Fioo LT LT4 , works fine with 1.70 and 2.2a
Weird enough.... could be my ears, but the LT LT4 is brighter than the OEOTG. To a point where for me, it's a no go. I haven't tested it for hours, but on the three songs I tend to use :
Vamala - 3000 miles
In Mourning - Colossus
Soen - Deceiver
cymbals were way to bright, and the whole color of sound was toward brightness, so the LT LT4 for me will return to son video..com, and I'll keep the OEOTG.