I have a high end Technics receiver powering a 5.1 system with older Advent speakers. The sound of the system isn't bad, but I would like a little more tonal control for music. What are the pros and cons of equalizers? I know not to use them during home theater modes, but I also have an experience where an older EQ blew the driver in my sub (couldn't have been a coincidence). Should I match brand to my receiver or skip the thing all together?