Dennis - I'll take another look at the insides and double check my checks, thanx! The Yamaha may work a bit different from the Korg, and you speak as if you think I'm still using the Korg. Not so ... I'm all s-950 until something better comes along. I'm hoping that I find a way to pump extra audio into the PA900 when that hits the streets near me, but so far that hope is fading with no documentation to support my wishes.

Sigh ...