anyone familiar with aurios isolation

You can do it either way. Your preference will determine which method is best.

also! you can try moving then around..try 2 at the back and 1 in front then reverse..there can be a difference in sound depending on the piece of equiptment..usual recommendation is the heavier part of the amp gets 2 and the lighter get the 1.Something you have to experiment with.

thanks for your response-are they easy to set up and do they improve the sound enough to even consider geting them? thanks