IEM = in ear monitor. What spaceatl is arguing is that he wants the natural mojo of a cab on stage pushing air. In my instance, my band would love to go with IEMs and do away with cabs/amps. It's much lighter, setup time is cut down, makes traveling easier, and we will have complete control over personal monitoring. But I'll agree, I currently am running my cab live for stage monitoring, as well as sending a stereo signal directly to FOH. I like having the cab and the tube, stereo, power amp. Ha. It's strange, but it does just "feel" better than when I play only through the PA.