I have my Bugle phono stage connected to a switch that allows me to choose it or line from the CD player. Outputs go on to the amplifier.
My speaker crossovers have separate inputs for woofer and tweeter.
According to Conrad Johnson re: their PV-10 pre-amp
"For a second output, a Y-adapter is perfectly okay, and is electrically the same as a second output would be in any case. Although, instead of the Radio Shack-variety Y-adapter, we would suggest a one piece metal fitting made by Sound Connections International, brand name Vampire Wire, email address::"Is this also true of a passive system like mine? Can I use a "Y" adapter on each output channel to drive both amps, one for the woofer and one for the tweeter?