[Elecraft] Power Settings for no AGC in Elecraft Radios

[John]

All (especially Don),

I have heard it explained on this reflector the Elecraft power control 
loop is such that the usual advice to...

   "max out the power setting and adjust the audio level input to avoid 
AGC action"

...is not appropriate for the K2 and, I suppose, the K3.

I accept this, but don't quite understand the reasoning.  Don can you 
please explain the key differences between a rig, such as my Icom 746, 
and the K2 that mandate this?

Are there other radio brands with power control loops like Elecraft 
products?

Thanks.

John, kx4o