can i have multiple monitors with my amp

[ONKYO]

Iiyama GB2760QSU-B1 27-Inch WIDE LCD G-Master
AMD Radeon R9 380
onkyo txsr308

I have had to unplug the g-master from the amp's hdmi as i couldnt get 144hz using a hdmi cable As hdmi only does 60hzs i have had to use dt.
I want to use another G-master but im lacking dt connections on my video card.


any ideas from people running this type of system with multiple monitors would be great.

 

[ONKYO]

so i got my sound working with a cable coming from my amps hdmi, just plugged it in to the back of my video card and it worked fine first time. so i have to figure out if its worth using dvi for two gmasters .
If it can handle 144hzs , 60hzs and 30hz i will be hopefully about 144hz.


im one step closer to happiness.