Finally we can see more and more Hi Fi speakers ( still not so many ) which serve acoustical adjustments like the JBL 4309 Studio Monitor with UHF trimmer. 90% of all Hi Fi speakers are missing these features what makes them unsuitable for room adjustments and are the nightmare for audiophiles who need to pursue the perfect speakers. As a user of studio monitor speakers I can absolutely confirm that such features are and should be the most implemented in ALL HIFI speakers ( as they are in studio monitors ) and please do not tell me that it is not necessary because we have amp knobs....Extremely important feature. I wish all of the Hi Fi speakers had them and that possibly would save a lot of compatibility troubles. I still have no clue why the makers do not implement them - in studio speakers it is a must for example. Can someone confirm or disprove my point here...