Audia Flight 50 v Pass Labs XA30.5

I am wondering if anyone has compared these two amps. Pass is well known; while well known in Europe, the Italian Audia Flight is only now catching on in the US. They both cost roughly the same and have roughly the same class A power. Wondering if the sound could be characterized as similar -- hopefully liquid, detailed, smooth and without the glare/distortion in the highs (eg, violins) that plaques the vast majority of audio gear. I would wonder if one or the other has more laid back highs (which I prefer to the forward character of the highs in most gear).