Dynavector P75 Mk111 and power supply

There are a couple of threads in relation to this but they're old and relate to older models of the P75. I thought it might be helpful to folks to bring the story up to date with my recent experience :

In my quest to squeeze as much as I can from my system with no more big boxes I read a couple of threads here about the little Russ Andrews PSU which fits the P75. P75 owners will be aware that Dynavector say there's absolutely nothing to be gained by using anything more than the wallwart that comes with the unit. So it was with some doubt that I found myself plugging in the relatively inexpensive little PowerPak 11 and connecting to my P75 mk111. And - it didn't work. At all. It was powerless. Turns out that whilst the references in the forum to centre negative configuration were correct for mk1 and mk11, Dynavector changed the mk111 to centre positive. (N.B.) Back it, apologetically, went and a replacement was sent immediately and in time for the bank holiday. Very nice people. It took just one track to know that it makes a significant difference, most noticeably in detail. Simply, instruments came out of the comparitive shadows and made themselves better heard, better focused; nuances in vocals I hadn't heard before, were present. This, without any added brightness/harshness - my personal devil. In fact, I'd say the sound is degrees smoother. Key test moment was (always is) the musical, but objective, bordering on 'for god's sake just leave it all alone' g/f force-fed a couple of tracks a to b and announcing, without any priming, that she could hear instruments more clearly - 'it's much sharper'. I'd add that the soundstage is bigger, too. Job done. Cheapest sound improvement I've ever made - bar the Mogami cables. (Though, out of curiosity, I'm going to borrow a Chord Chorus Reference IC to compare to the Mogami from p75 to 252.)