It was quick and painless... and it seemed geared to Home Theater.  

I don't visit this forum very often, so today was the first I've seen of your survey.  I found it very interesting that you list A/V receiver features in the context of desired features in a preamp/amplifier.  My thoughts are that hi-end stereo vendors are selling to an ever decreasing market niche largely due to their adherance to obsolete archtectures and feature sets.  Current technologies allow for some very exciting, high-performance products with attractive feature sets to be offered.  The trick will be to deliver those feature sets in ways that are easily understood and utlilized by the market.