I just bought a behringer ep1500 as my main amp (because it bridges down to 4 ohm at 1400 watts) and I am using my old realistic receiver as its preamp. I am using these as my computer speakers b/c I like to listen to music from my harddrive. Should I turn off the amplifier when I am not using it (like if I leave the room for a half hour) or should I leave it on most of the time? My main consideration is whether frequent booting is harmful to it.