I forgot to add in my previous post that I have my Transporter and Max Balanced Amp plugged into a Furman PST-8 D surge protector.
FurmanSound.com - Pro A/V Product - PST-8D
(I also plug my other Transporter, Bryston BP-26DA & Bryston 4B-SST into another PST-8 D).
I know this is always controversial, but for me, I just can't bring myself to plug this much expensive equipment directly into the wall without surge protection.
I chose the Furman primarily because they have good surge protection (with a warranty). It also has some other features that, in theory, should give a cleaner background (removing line noise, preventing ground contamination, keeping digital circuits separate). Haven't done enough with/without listening to comment on the effectiveness, though. Lastly I bought mine for $135, so in the world of power conditioning, this is not too bad.
The main downside of anything that is plugged between your equipment and the wall is that it can limit current draw. Seems that the design of the Furman shouldn't do this (and I'm guessing the peak draw of the Headroom Max Balanced Amp is nothing compared to what the peak draw of my 4B-SST is...).
I would love to hear what Tyrl & the Headroom folks have to say and whether they use any.
muski