Rogue Audio Stereo 100, Atlas Magnum III anybody running them? Sound signatures?

I’ve had the Stereo 100 for ~3 years now (driven by an RP7), and had no plans to upgrade... now you have me interested in this upgrade. Any details regarding what they do in this dark upgrade? Already very pleased in the bass performance of the Stereo 100, to improve on that would be impressive. Regarding the Stereo 100, it’s dynamic, detailed, but "muscular". Doesn’t break a sweat with music that would sound disorganized or frenetic on other amps. Love the treble decay, which tubes seem to get better than SS IMO. Stereo 100’s bass better is superior in quality to the SS Parasound Hint and NAD 388 that preceded it in my system. +1 to excellent Rogue customer service as well. They’re good people. Edit: my listening tastes are like 70% jazz, the rest fusion, afrobeat and rock, with a bit of female vocals (inc. Nina Simone, Sarah Jarosz). The Stereo 100 seems adept at all of those, and is versatile.  Oh the Stereo 100 is super quiet in my hands. 

Yet, it is certainly not clinical or cold as with SS.

Ignorance is bliss

@rick458

Disregard what Craig says. If he had a brain he'd be dangerous. I have heard both but not side by side. Both are excellent amplifiers with very good bass. A little tube rolling and you'll be quite happy I bet. I would reconsider the Freya as it will not equal either Rogue amplifiers, I would go at least the RP-1 (Rogue Preamp).

stereo 100 is the amp i never should have sold.  most powerful, muscular 100 watts / channel amp i have heard.  much more powerful sounding than the rogue cronus magnum ii i had, also 100 wpc.  
super nice sounding amp.  

I also have the Stereo 100. It one of the very few amps which can disappear. Well balanced and clean stuff.