In the past, when I had big dynamic speakers like the B&W800, I would use a couple of Telarc LP, Fennel's Holst Handel and Bach Suites, and Time Warp to 'test' the dynamics of my system. I still have these records in case I move to dynamic speakers again someday, as my Maggies can never be able to handle the 'torture'. I get a kick out of super dynamic demos from showrooms and none more memorable than a short Telarc CD cut from Beethoven or Bust that I heard in HK's Golden String audio shop in the 90s, playing through big Rowland amps and a pair of Duntech Sovereign. At a very loud but clean dynamic blast, I had to look a the ceiling as I thought something might have collapsed up there.