If you call, David Sr. usually answers, and he'll talk with you and answer questions. I bought the Aria integrated a short time ago and needed some advice on something, and he was very friendly and informative. I suspect he'd be more than willing to discuss whatever questions you have about new products.
On a side note, the same is true with some other guys. Wesley Miaw of Neko Audio is very friendly and willing to answer emails (he even got involved with advice on some A/V issues I was having), as is Mads Buchardt in Denmark. And Fritz Heiler even sends his phone number and says to call anytime you want to talk music and/or audio. It's great having so many friendly and knowledgeable people making the gear we love.
On a side note, the same is true with some other guys. Wesley Miaw of Neko Audio is very friendly and willing to answer emails (he even got involved with advice on some A/V issues I was having), as is Mads Buchardt in Denmark. And Fritz Heiler even sends his phone number and says to call anytime you want to talk music and/or audio. It's great having so many friendly and knowledgeable people making the gear we love.