I have a Stratos stereo Extreme+++ amplifier with all the bells and whistles including the Kismet circuit boards and the Symphonic Line Capacitors. I have had this plugged in to my main system since 2011 and since then, I have upgraded all of my other components but the amp. Trust me, it's that good. Sure, if you want to spend 5-10 grand, there is better but not that much better.
My amp is driving Golden Ear Triton Ones and with my all tube preamp, it's a match made in Heaven. My Stratos extreme+++ which cost me 2200.00 back in 2011 replaced a 3000.00 Classe' Amp which had more power. The Odyssey amp walked all over the Classe' and ate it for breakfast.