I have my system in place: Sierra mains, Sierra center, and CBM-170's surrounds. Glaringly obvious that I didn't really need to hear/audition before buying. All of those cryptic words like soundstage, imaging, etc. now make sense. I have been listening to music I have had for years and still hear new things. Hats off to Dave and the gang for bringing me back to home listening again! The Sierra-1's are truly remarkable. Sorry I took so long to discover.