We currently use one L1 Compact with the ToneMatch box. Three mics and an acoustic/electric guitar go into it. The electric guitar and bass are separately amped. Percussion not mic'ed. We are playing bigger venues now and are considering buying a second L1. The question is, can the 2 units be mixed together so all inputs are output (in mono) through both columns? If so, this gives us more volume, more spread and the ability to add in the bass amp and electric guitar. (They both have DI outs.) I know the ToneMatch as well as the L1 has aux in and aux out. Is this how they can be chained? The alternative is to go the more traditional route with mixer, power amp and speakers, but the Bose sounds great. I realize this may be beyond what the compact systems are designed for. Another question: has anyone played through the plain vanilla versions of the Bose, like the Gemini or Turbosound?