I currently have an older Outlaw Audio 5 channel amp that was built by ATI (Outlaw 750 model) that is a warhorse. I have no issues with it, will continue to use it, and I am not looking to get rid of it. However, just to try something different, I have thought about trying an amp such as the Schiit Aegir for my music listening. While not a true class A amp, it runs in class A for the first 10 watts before transitioning out of it. It is only rated at 20W RMS total though, so it is not a powerhouse and not something I would use for home theater soundtracks.

I also run a pair of very capable subs and high and low pass crossover at 80 HZ, so the Sierra-2 EXs are alleviated of much of the low end.

I sit 8 feet away from my speakers, and at my listening position now I like to listen at around 75-77 DB average, and obviously there are peaks above that that occur with dynamic recordings. Based on my calculations, and with the sensitivity of the Sierra-2EXs, I am estimating using the various "wattage for speaker calculators" available on the net, that when I listen to stereo music that my amps are likely using around .6 Watts RMS to reach 77 DB, and then for 12 DB peaks above that (89 DB) it would be using 9.4 watts.

So, my question is does anybody suspect there may be a problem with the Schiit Aegir not sufficiently powering my speakers in my room? On paper it seems like it would work just fine as I do not listen at extremely high volumes, but perhaps I am missing something. The Schiit Aegir usually gets recommended for high-sensitivity speakers, and not speakers that have sensitivity below 90 DB.

I also have read, but not sure this is true, that crossing over to a sub at 80 Hz increases the sensitivity of a speaker and it is therefore taking the power requirements for a speaker and approximately reducing it in half.