Changing mic position isn't nearly as maddening as moving from one room to the other to adjust mic preamp and fader, moving to the other room to adjust the amp, trying to judge what you're tracking through headphones, going back and forth and back and forth, and then recording a track that's "close but no guitar." It can take an hour to get a decent sound dialed in... Today I got the best lead sound ever in about five minutes. Plus, I think it makes the control room look cool.