Order item on a Thursday ... Saturday delivery: bravo Amazon! I had the Logitech X-230 that I found with these excellentes.Mais Z-2300 is really a leap forward, just amazing. I have connected in stereo via RCA adapter on my card M-Audiophile 24/96 for musical creation (I had Tascam amplified monitors that I found too neutral!) In short, a completely satisfied customer ...