I went from a Stratos Extreme+++ to the full Kismet stereo amp in the Stratos case. There is quite a difference and well worth the upgrade price. The bass goes much deeper, you can see more into the soundstage, there is an over all ease to the music and the musicality is better all the way around. I compared my Kismet against the Sanders Magtech amp. There was NO comparison, I liked the sound of the Kismet much better and the Kismet amp with 200wpc sounded much more powerful than the Magtech at 500wpc.