The Pharoah doesn't sound much different from the Sphinx V2 it replaced aside from a wider sound stage and a little more detail. After I swapped for the Yamaha, I realized that both Rogue amps were lacking bass at my preferred volume level. I should've mentioned that earlier in this thread. I know Rogue claims an impressive damping factor, but I did stumble upon a bench test of one of their hybrid amps (can't remember which) and the reviewer listed the tested damping factor at somewhere around 80. I think the Pharoah is likely pushing the limits of my speakers' abilities in the mids and highs, but not the bass. Once the volume of the Pharoah is up around 70 db, the bass comes into balance with the rest of the spectrum. I personally never thought of the Yamaha amps as "lush," I rather considered them neutral. My AS-500 however is warmer sounding than the Rogue amps. My hunch is that the bass difference is a result of the different topologies. I might try to use the pre outs of the Pharoah with the home theater bypass of the Halo and see what happens. Maybe then I can isolate the issue to the amp or preamp.