I used to have a Bryston 4bsst2 driving my Magico S3's but upgraded to the Constellation Taurus about a year ago. The difference in tonality, soundstage depth, width and detail was significant. The Bryston was a workhorse and tonally not bad, but the Constellation was a major step up. I only have about 50 hours of break in on my Sr1a's but I'm already very impressed. I do a lot of listening in the early morning and evening after my son goes to bed and the Raal's have been a great substitution for my magico's. The S3's are a very transparent and revealing speaker and the Raal's follow suit. A very neutral and transparent set of ear speakers. I can clearly make out the sound signature of my Chord blu/dave combo and the Constellation. I used to prefer my hd1000 v2's out of the Dave but doing an a/b between them and the sr1a's makes the hd's sound boomy and inarticulate. I appreciate the speed and detail of my BHSE sr-009 combo but always felt it lacking in the low end. The raal's have the same or perhaps more speed and clarity but execute the low frequencies in a way that the former combo cannot. I still have a lot of tracks to throw at the Raal's but up to this point I'm very happy.