I've read reviews which declare that a particular speaker sounds great when the volume is cranked up. Any speaker recommendations for speakers that dont need to be driven too loud to sound very refined and where the individual instruments can be picked out? I usually listen to Jazz and classical and am looking to spend about 1000-1500 for a pair of speakers and another 700-1000 quid for an amplifier. Is there a particular characteristic or a technical parameter (maybe speakers with higher sensitivity?) that require a speaker to be driven at higher (louder) volumes to showcase its abilities? Or maybe I should be asking what speakers that do well even when paired with low power tube amps? My room size is approximately 18 by 14.