I'm curious about the position of the power on switch on AC powered Bottlehead kits. Most of the amps are in the front, the pre-amps are 50/50 and the phono pre-amps are both back by the AC in. I searched the forum but didn't find an answer. Are they positioned for routing, asthetics, noise rejection, or? (My personal favorite is the toggle switch on the front, a la Stereomour II)