Well, I see PPPs on sale amid reports that they're being discontinued. Amazingly, I'm considering trying to get one before they go. From a purely practical perspective there's no way I need to spend the money, especially in light of the big hit I took buying the McIntosh 501s; the bank account is low enough that even with a $500 store discount, a PPP would be a major expenditure.
And as it seems to always be, there would be necessary associated costs, like a power cord long enough to reach the necessary plug and something to compensate for the lack of outlets (the PPP has 10; my Tripplite LCR has 14). I do have a heavy-duty power strip I could use (I'm using it now to extend a 501 to the LCR), but that's not ideal. Add to that the loss of convenience: the LCR has 2 outlets on the front, allowing me to plug in my iron (9.6A) and just go; the PPP doesn't, plus the iron is near its capacity. PSA says that although the PPP's maximum output is 1500W (short bursts), its normal output is more like 1200W. The LCR will handle the entire line if it has to (LCR
2400, after all). But the PPP will better isolate components from one another, possibly improving the sound a bit.
One other idea is to upgrade the HT1210 the LCR is plugged into, perhaps to a PF-i (the PF has a 45A current reserve; PPPs offer 50A, no big deal in my system anyway) versus the HT1210's 12A, then a modest upgrade to the AC cords for the 501s and the Furman.
I'll figure something out, I imagine.

