I am bummed. I made an educated guess from reviewing the "engrish" translation of the Marantz MA6100 manual that it would be the solution to my compatibility needs for remote power-on of the 5 MA500s currently in my system. The MA6100 adds a standard 12V trigger capability, unlike the MA500, which uses Marantz's proprietary RC-5 interface. I bought the MA6100 solely with the intention to drive it via the 12V trigger from my Rotel 1068 and then rely on it to cascade the trigger via the RC-5 interface to the rest of the MA500s. Long story short - it doesn't work. I'm done with Marantz home theater gear. Dealers can't answer questions (believe me, I tried). Their phone support is useless... Anybody in the market for used MA500s and MA6100s? I have 5 MA500s and 2 MA6100s for sale if somebody needs them.