Paul S wrote:

It surprises me if you wish to do away with the battery. Or, perhaps a unit could be offered "less battery", which the purchaser/user could add on his/her own. This would "solve" the logistical problems (and the expense) of shchlepping batteries, at least for the "manufacturer"/sales/service people. Surely, anyone could follow instructions and get a decent battery (or batteries) on his/her own.

Remind you that in properly operating PP it shall not be negligible difference if the unit run from battery or from wall outlet. Sine I do not know why PP sound as good as it is (when it works properly) I can only speculate what the presence of battery would do and how it might impact sound quality.  Presumably it might not affect sound at all properly operating PP would be working perfectly fine with no battery but with large capacitor tank instead of battery. For sure I would not be making those experiments with my PP. It is kind of shame as if PP would back me up with this experiment then they would be able to get rid 2/3 of the regenerator  along with charging circuitry - in my estimation the most problematic in the unit. If I design my own regenerator then I would for sure put the requirement do have any battery.

Romy the Cat wrote:

That is a whole point: the shape of the sinusoid and consequential harmonic distortions are not being the decisive factor that responsible for better sound. It is sad that neither PP owners nor we the users after years of using PP still have no idea what in this regenerator makes it to sound so good.

miab wrote:

I have not seen it mentioned but I might of missed it. The PurePower absolutely demands shielded interconnects especially between preamp and amp in my experience. No matter how careful I route the cables, I was getting noise or buzzing from the speakers. Exactly as described by many on the net. Only shielded cables were successful to stop this. This is with a Placette passive. On my second system with Purepower, the ground lift on my Placette active sorted the noise out to absolute silence with proper care in routing wires. I just mention this in case others need ideas in diagnosing buzzing that I so often hear of.

Romy the Cat wrote:

First of all I need to admit that I do not believe to people who claim that Purepower produces noise. My units are completely silent and I know other people who have completely silent Purepowers. I have no doubts that the people who report noise do have nose but I attribute the nose to their lock of competence to deal with ground loops. There is another issue – no matter now inapt Purepower folks are and how negligent their assembly and testing I do not think that they can do anything that would make the unit to have the noise while it maintaining in and out grounds and while producing proper wave.