Summary: The first thing you will notice when you pick this thing up is that it feels like it has been cut from a block of aluminum. Heavy, dense, quality. I didnt expect this preamp to have much of an impact on my system. I was using the preouts on my onkyo 9050 integrated amp, hooked into the onkyo m-5000r amplifier (gorgeous). Well, consider me a believer. The clarity and control were vastly improved. This is coming from a skeptic!