January 3, 2012 at 5:00 pm #122997
You can connect your guitar to input 1 & 2, and amps to output 1 & 2.
Don't connect output 1 & 2 together to one source without a mixer.
But to seperate amps no problem.
Why would you want to do this?
Best is to use a pre-amp or the 4000 in an FX loop.