ok i might be posting this in the wrong place but i want to know how difficult it is installing a demeter onboard preamp? i have installed pick-ups before so i know how to do that. but do i need know how or can anyone do it? i am doing it to a warwick standard streamer because i want it active so i can play out with it. also do you think barts will be good for metal or should i stick with getting emg's? thank you.