Here a purchase inexpensive and somewhat completely transform the sound of your "dear" stereo. I experienced for several years. Or whether the different elements of your hi-fi experience all the evil effects of microphones perfectly inaudible vibrations or not, or infra-sounds (example vibrations initiated by cars or trucks and other vehicles that pass in your street or later). It is measurable and measured (You can check on the internet). Obviously this affects more or less faithful performance of your items. Imagine the impact of this on a CD player or turntable vinyle..Bref a small investment that can seem exotic but do regret pas.C'est the same logic that leads to mount spikes on pregnant Hi-Fi. Better listening !!
