Jab suggests Audio Physic Virgo II. I had a pair and tried to drive it with a VAC 30/30, but it did not work. Although the Virgo is an easy load, the VAC could not control the (4) woofers. With small "scale" music it was lovely, with most of the magic of the 300B's. But whith larger, more demanding music- and I am not talking about Telarc recorded symphonies - , it was a disappointment.