I dont understand this...this thing is not competing with a freakin 20watt yamaha guitar amp when plugged into my keyboard....the keyboard volume is max, the volumes max and its great sounding but soft as that amp. then when i put it to 11 boost its louder than the amp but not a whole lot louder...maybe not even enough to compete with my band...and i dont wanna keep it at 11 because i hear its bad for it...what to do, what to do...