@Honch
hello

you have a lot and good ideas!
9v battery is enough

about patent i have no problem, my drivers are isolated drivers for each string with a unique internal design and use nano materials to work with magnetic pulses i doubt eaven reverse engeniered someone will figure it out, about the feature of killing sustain , no worry too this technology employed is used in a lot of stuff and there's a lot of ways to do it , the cheaper is a custom circuit design wich will allow to put it on sale for a very low price, the easier but expensive is to use a micro chip ,there are a lot of companies that sell them for purposes like this, well i mean for this Physics properties.
this sustainer have a lot of features and now in working in the idea you gave me just waiting for parts here in town there's not one only store that sell electronic material the closest one is about 250km away, also im involved in many projects right now have to calculate carefully my time.
Has i build my own pots i easily can make a lot of blending configurations.
well soon i will have news

thanks a lot for your support