Alas, tragedy!
I missed the original delivery last Saturday morning as I was at work. Pretty astounding, Headroom shipped it around Thursday morning my time and it was delivered that Saturday morning, from Montana to Hong Kong. I got the big ole package this morning and the first thing that happened after I had it all setup was that there was a painfully loud blast of white noise in the left channel of the BUDA. It's produced by the BUDA and is unaffected by inputs, settings, or the outputs (balanced and unbalanced). It finally went away while I was playing with it. I am beginning to think that it dissappears after the amp has warmed up. Maybe a solder connection is bad or damaged and the expansion from the heat reconnects it. Either way, now I'm debating whether to suffer with it or to send it back. The return shipping is probably rather astronomical. I remembered a while back pricing and timing out the shipment from Headroom to see how long it would take. For a regular Joe-schmoe like me it would cost 5x as much as what I paid Headroom for shipping.
On a side note, I ended up buying a balanced Cardas cable for my HD650. So I have both a balanced and unbalanced Cardas cable so I can do direct comparison between balanced and unbalanced. The single-ended cable is the smurf blue and is a bit thicker than the grey balanced cable. A bit nicer to have the slightly thinner cable.