The EV's perform much better with a mixer. The input is just not as hot as some other amps, but the power IS there. Try the mic inputs, but be careful ....... they might be
"TOO hot."
(there is ALWAYS a soing title in my posts!!)
The EQ is a little strange, for sure, but as an "All in one" package, I love mine. I do prefer using them WITH a mixer, because of power and sound color. I think that's the way they were intended to be used anyway. The option of plugging direct is a nice "add on" but not the MAIN feature. Try a mixer, and see if you like them better.