My head hurts. I have a pair of Mission M34i driven by a Rotel RA-1062 with a Squeezebox (FLAC) source. I bought the M34i after my old JPW P1 fell victim to "disintegrating foam-rubber cone suspension" syndrome. I didn't have the opportunity to audition but bought on the strength of the M71i I had on a little Denon UD-M30. Unfortunately, at exactly the same time as I bought the M34i, & before I had chance to listen to them, BOTH my amp & CD player expired. I dug out an old Yamaha AV amp & Philips CD player but wasn't really happy with the sound. I put this down to the old amp & shortly after bought another, again a Yamaha AV. This was an improvement but not hugely so. Which brings me to the thread title - are there any test/calibration disks around that will help me properly assess exactly what the speakers are doing?