Just recieved my Echon 6 and maybe I’m missing something, but is there a hold function for the numeric keys to make it a standalone drone-machine? So far I’m back to putting something heavy on the keys but it feels fairly old school 
Hi there. Check out page 49 and 50 of the manual: https://echon6.com/manual/Morphor_ECHON_6_Owners_Manual_v1_2.pdf
"A long press on the same button [ENV RANGE/HOLD] activates HOLD mode and the LED begins to
blink. With HOLD enabled, the envelope ignores MIDI note-off messages and
remains in the sustain stage indefinitely, ideal for drones or ambient textures."
Ahh, a longer press, totally missed that! Thanks!
And that is per voice, activated via the voice group.
“And that is per voice, activated via the voice group.” - correct