PS Audio DirectStream DAC driving VAC Amps

Anyone driving a VAC amp with a PS Audio Directstream DAC? If so, are you pleased with the combination? Did you find the VAC's hi-gain / input impedance to be a big improvement over your previous amp? 
I've wondered about this particular combination myself.
Cannot speak to that combo, but the DS deives my Pass  xa30.8 very well. 
I started this threaded because I was considering a used Phi 200. Well I purchased said amp and had my first listen last night. I am very happy with purchase. My system has never sounded so spacious; the sound and soundstaging is fantastic. It's amazing what a great amplifier brings to the equation. And it shows what great upstream equipment PS Audio's DS Memory Player and DAC are.