I'll be damned!!
I am pretty shocked, never expecting such a great result.
This Amp 12 is pumping some serious voltage, it is driving the HD8XX like an OTL amp.
Seriously, very authorative for a battery powered portable device.
Highly dynamic, full sounding, great bass and with the NOS mode, very good timbral match.
OK, it is not going to make my Euforia obsolete but still unexpectedly good.
I like it better than the Cayin C9, don't know what is happening but the synergy is unbelievable.
In the next few days I might also test it with the HD650.
Now back to my wine and some Brahms...