It is probably not to be avoided. It depends upon which amp you have. the 1K-FA uses a serial
signal from the rig to turn on, so turning that off should also turn off the amp. The 2K, 1.2K and 1.3K
need 12v to the connector on the back to turn on, so if you only have one plug, it can't be avoided.
73,
Mitch DJ0QN / K7DX