How do you know he didn't, Chris? You must think you're the only guy in the world with a clue, huh?
At any rate, why would he need a study to prove to you that
he loved it? Again- and read this slowly and repeatedly if necessary-
he found it equalled anything
he'd ever heard. If you assert it's not, perhaps you can set up your own DBT to refute it. Until then, I'll just let him enjoy his Sony in ignorance.
For a guy who thinks amps and recievers all basically sound the same you sure are averse to the idea that the Sony could sound good. Why is that, exactly?