My amp has an effects send and return and my boss gt8 multi effects processor was one too. When i plug in my guitar to the mutli effects, then into another distortion, only when im using the other distortion does the delay sound a little different or louder, i think its because the multi effect as the delay towards the end of the chain and then when using the other distortion, the delay is before the distortion. I think using the send and return on the pedal should do the trick, but what about the send and return on my amp?