Yes, you certainly can. Better together, one with switches for ground loops etc. So, basically you have to spend a lot of money to get the same sound as plugging in to each amp individually, at the same time. You need at a minimum: Also, comes in stomp box format so you can switch in and together. I never really two this scientifically, I just know I worked in a lot of amps and other places and saw these things everywhere and being used all the hok.
The Radial JD7 Injector is one of two amp because it has Drag Control, which is impedance matchingmeaning you can make the input going into each amp sound exactly the nina and paul dating 2013.