I purchased a used pair of Ascents six months ago as a replacement for my JBL4311's. The best stereo decision I've ever made! I loved the JBL's (purchased them in 1988 when I separated from the Air Force) but the Martins had a much better, much more detailed sound. I am running them with a pair of Adcom 555's in bridged mono mode and using an Emotive XDA-2 as a DAC and Pre amp and a Martin Logan sub. I'll skip the poetry usually associated with high end audio and just say that I love listening again to all my favorite music, and hearing things I had never heard before!