Hullguy,

How would I use this unit? Could I attach only the balanced L & R XLR outputs from the 990, as well as the pair of single, rca ended, two channel preamp outputs to this unit and then output a new, pair of XLR cables to the L & R XLR inputs on my amplifier, switching between the two inputs via this unit? Is that how it would work out for my application? I'm not sure it actually allows for switching; either that or I'm missing something?

How much of a degradation in sound quality would I be facing?

Man, this sure seems confusing; or, am I just getting old?

thanks,

John