Fantastic items. I did some prototype for italian brend Viva Audio Devices (the owner Amedeo Schembri if my dear friend) and now I can understand the difference from commercial speakers and High-end Speakers, amplifiers and complements; inside them there is a soul of the designers and the builders. Personally for test all I like to listen a trumpet without equalizer and tone control; only the best systems can reproduce this instrument properly and return back the real strong emotions.