A mammoth powerhouse

I saw the Zeus review where he hated the ergonomics but I went for it anyways to power my HEDD Headphone and boy is it powerful at 2 W. The ultragain is great but not required as it is better without forcing the sound. i listen on Medium and its more than enough. I use it in my music studio with SPDIF and the sound is awesome on my HEDD phones. Miles better than my Gustard H16 which is itself quite remarkable. The battery is great, the DAC is M17 equivalent, what else can anyone else ask for? Pefection and bravo, Fiio for your best effort and you have succeeded. A true gem and I recommend it highly.