Agreed, Michael, Gerhard made a boo boo, as looking at the picture of the Powerbox "Competition" unit pictured on the Duralite website distinctly shows a "Logic cable" from t he switch assembly to the powerbox, meaning that the switching and power management are similar to the Emcotec unit.

The attached picture shows what you get when Emcotec says "amplified signal" This picture is of a Fluke 98 digital o-scope screen, showing input/output from the Emcotec unit on the Throttle channel. As you can see the pulse has very little, if any, amplification. The input signal (channel A) is about 1.8 volts in amplitude, and the signal out (Channel B) is 1.9-2 volts, though it's hard to see without a lot of study. This is not a lot of amplification, though the signal is definitely slightly different (note the "noise" spikes and how they do not coincide exactly) showing that it is definitely going through a filter/amplifier of some sort, which nullifies feedback along the signal wire. A straight-through signal would be an exact duplicate of it's partner.

So, yes, the signal goes through a "stage" inside the Emcotec box, that mildly amplifies it and nullifies feedback, though the effect of the amplification, in this instance, is a factor of less than 10%.