Trigger cable lowers temperatures & power consumption

[Axel]

A trigger cable allows the companion/slave to enter a deeper sleep in standby mode, there is no change in “playback” behavior. In standby its very noticeable, my slave was always warm to touch (ie, burning money), with a trigger cable it gets cold (after a few hours). The system wakes up from standby a little quicker too: as a soon as the main wakes, it triggers the companion to wake. It’s worth doing for sure. The only cost is a cheap 3.5mm headphone cable, and 5 mins playing with the configurator.

Does the companion go completely cold after a few hours? If so, how is this different from fully off mode? I prefer the amps to stay warm in standby mode as it means less thermal shock to the components on startup.
On my valve driven guitar amps, standby is used to make sure that the valves are up to temperature and ready to go as soon as the amps are switched "on". On my 440s, having them warm in standby mode means they are up to operating temperature that bit quicker.