I tried to do some research, but I haven't found anything that helped. I'm looking at a 100W tube head. It should cover 99% of gigs, but the idea of possibly running the preamp into a high power power amp for trying different setups interests me. I know a tube amp has to be plugged into a load at all times. Is there a simple dummy load solution, then use the preamp out into a poweramp? Or is this just a bad idea all around? Layman's terms please .