Only addition to this is transformer vendors specifying a very high temperature rise or going extremely high on the flux curve are making these calculations hard. So, in addition to these guidelines, you really need to have conservative ratings - or specify them yourselves, which few do.
Here are some links to consider - there are important things to think about, like line variance, duty, AC RMS current versus DC current, etc.
http://sound.westhost.com/xfmr.htm
(Read all three sections)
http://www.electra-print.com/custompower.php
I suppose my questions would be:
How much current does the amp draw (measured) and how much headroom do you have from the spec'ed current?
Do you have any DC on the line or things like dimmer switches, etc. that would cause noise?
Are signal grounds isolated from earth and in general where does the E pin go (have you implemented a ground loop breaker scheme, etc.)
It does indeed, it's a great performance. I stumbled upon it on eBay and nabbed it, but no it's not generally available, but a few in the series are available at some of the big places at blowout prices, as they are SACD layer only.
Good luck! I would probably watch Yahoo Auctions rather than sending a friend to hunt around Akihabara Town. I will be there weekend after next, though and if I see any I will grab them for KG amp fans - don't hold your breath though.
Picked the wrong time to upgrade Diptrace. The old licenses aren't compatible with the new version so waiting for sales to help me upgrade. I am pretty sure my old license would work on the older version, if anyone was interested in a "slightly used" software license
Ok, got a differential front end (balanced-balanced and balanced-SE) working today and zeroed DC offset on a whole lot more of these little modules. Seems to perform really well!