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Above, talking about APS-like regenerators, I was skeptically referred to the battery back up functionality in the APS PurePower, calling it bogus and completely unnecessary. It was very funny to read at the APS site as the APS guys promote their units as something that will work with a complete power outages… Who the hell cares?!!!!

However, thinking again I have realized that the presents of the plumbum rechargeable battery is one of the greatest functionally of the APS-type regenerators. When the voltages is rectified and converted to DC then the presents of that ultra low impedance lead accumulator act as a perfect buffer and a perfect regulator. I do not know if APS unit has any regulator at output line. Any regulator I have seen etas dynamic and I hope the APS unit do not have explicit high-voltage regulator (at least it sounds as it has not). However, the unit does outputs a stabilized voltage… So, what I think that APS devise does, is regulating or stabilizing the 12V before it charges the battery and then take the stable battery voltage to the regenerators,  since it uses a plumbum battery is has no problem to sit all time under excessive voltage… (As Dima educated to me)

Also, that battery acts as a very cool natural filter to swallow the after-rectifier ripples. Still, it would be very interesting to see how the quietly of that DC that sits before the regenerator might affect the output result (sound). If I had a APS-type regenerator available to play with I would put on the 12V side, parallel to the battery, a huge 12V automobile-capacitor of 5-7 Farads. This sucker should “burn” anything in the line- ripples, residual harmonics, noises and will give insultingly flat DC - I just hope the rectifiers might change this moister…

Anyhow, as I can see now the presents of that lead battery is very essential and hugely important part of the double conversion type regenerator. I hope the APS people explain it at their web site instead of bogusly stressing that this unit will to work during power outages.  If I have a power outage then I have no air-conditioners - with all my 6C33C running to have no air-conditioners would be MUCH more deadly harm for my listening room then juts bad electricity…

So, I did not get it from beginning: the battery buffer in double converters is good, very-very good and useful thing…

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