My Vantages are arriving this Friday. I hope my Accuphase E307 100 watt integrated will have enough power to drive them. They are rated to about 150 watts at 4 ohms. I don't know if they like anything below 2 ohms because they don't have the power supply of a separate amplifier. I'm a bit concerned about the impedence dip in the high frequencies. Anyone care to share your experience in driving the Vantages?