I was using a Rotel RB 1090 to drive Thiel CS 3.6s and decided to try Stratos Mono Extreme SE's. The improvement was immediately noticeable: more detailed all around and improved bass depth. I sold the Rotel after about a month. Associated equipment: Sony SCD 555es changer, Rotel RC 1090 preamp, Thiel CS3.6, Anti-cables and interconnects. I can't comment on synergy/compatability with other equipment but I'm completely happy with the Monos/Thiel combination. They've been in my system now for 2 months. I'm now saving to buy the Tempest Extreme or new Candela preamp to pit against the Rotel RC 1090.