I have a Samson XPS510i and a Fender Passport (500W). Both of the systems amps are broken, but I still have all 4 speakers and they still work. I need a new system, but I am wondering if I can still use the 4 speakers with a new amp. I do a lot of public speaking and need some power to blast loud music. If I had all 4 speakers hooked up to a 1000W amp, I am thinking it would be an upgrade to either of the previous systems. What do you recommend in the 0 range that can drive all 4 speakers, give me multiple mic inputs and multiple inputs to connect phones or other music players? Thanks for any help and advice!