Greetings! 

I have a design question.  I've been reading about the importance of chain elements in achieving optimal control over tone.  My understanding of the basic chain:

Guitar
Equalization control 1 (pickup selection, EQ pedal, etc)
Effects & Preamp
Equalization control 2 (EQ pedal or tone stack on the power amp)
Power Amp
Power Attenuation
Equalization control 3 (speaker selection, or EQ controls on the attenuator)
Speaker.

In traditional tube amps, the purpose of the Power Attenuator is to allow the user to ensure tube saturation regardless of volume level, because tube saturation contributes to the full range of tone.

My question: does this same concept exist in chip amps?  In other words, is there any benefit to a power attenuator downstream from a SS power amp?  Is there such a thing as "importance of chip saturation?"   

Thanks!