Daisy-chain an amp or not

Don't starve your amp but running through another device. Just leave it plugged in and on. Some amps supposedly benefit from keeping them on all the time (see the threads). If your preamp (and amp) has a 12 volt trigger you can use this approach too. I wouldn't sweat leaving a ss amp on -- much better option than going through the preamp! Or -- get some exercise turning on the amp!

Agree that this is not a good idea for the above-stated reasons. Then again, if the rig is such that you don't perceive any improvement in sound after your amp warms up then it might not be too bad, although your peak current capability will still be constrained. Make sure that the aux AC outlet can handle it first (check the current spec. against the amp's peak demand) or your power switch would arc & destroy itself after enough on/off cycles (unless they actually buffer with a relay - another question you'll need to answer). I used to setup this way many years ago, until I learned to do better

Most pre-amps are not desighned to handle the load of an amp this way. Those jacks would be best for switching smaller loads like a transport,dac,cd burner, vcr, dvd etc...