My friend is putting together his first big rig setup and it goes as follows: Line6 HD147 Head (300 watts stereo transformer) Mesa Engineering 2:50 Power Amp (50 watts class A tube) Marshall 1960 Lead Cabinet (300 watts handling) He wants to run a stereo signal from the HD through the Mesa to give it tube power and sound and finally, stereo again, into the 1960. How would he run this? Can he do it without damaging any of the pieces? He will most likely be overdriving the Mesa at almost maximum power and using the HD to regulate the actual level of the sound. He already bought all of the pieces. The HD comes in within a day or two so he needs an answer fast. Thank you so much for your help. Anything I forgot? Please ask!