Full range drivers (alternating between Fostex FE208EZ and Audio Nirvana 8" alnico) in free air are my magic at the moment. ML Abyss off the speaker taps on my Primare SPA21. Volume around 55-60 db. For me, heaven.
What Makes your System Special?
Could be anything but interested in what makes it special for you. Is there something you would want to change?