GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.

Post Subject: Update on PP2000Posted by montepilot on: 6/10/2010

Paul,

I finally received my unit in February 2010. After installing it there was an immediate improvement to the sound of my system. I live in an apartment near downtown Boston. My playback varied from day to day. It proved to be very frustrating for the cat who came by several times to help me out with some problems. The system performed so differently from one day to the other you could not get a handle on any change you made in the system. It could sound very good or bad one day but the following day a totally different presentation.

The system finally stablized after I put the PP2000 in. The variations ceased and eliminated grundge that was previously in the system. He agreed that the sound improved quite a bit. One evening Romy decided to test the unit. When he tested the unit the sine wave was flat topped. However in battery mode the sine wave was very good with an ever so slight wrinkle at the very top. Not perfect as it should be. He posted a picture of this as you can see if you do a search on this site. Peculiarly though the sound did not vary from battery power to wall power eventhough with wall power the sinewave was distorted. Thanks to him I would never have known or even suspected the unit was not performing according to spec.

I was very reluctant to send my unit back for fear something would happen that would cause me to lose the sonic advantage I had received even if PurePower corrected the sine wave problem. Still I could not be content knowning my unit did not have a perfect sinewave.

I contacted the company and they had me return the unit to them. After and initial inspection they could not determine why the sinewave was not perfect. Later I was told there was a fault somewhere on the circuit board that affected only the reading of the sinewave but should not have affected the sonics. Finally they isolated a faulty component and replaced it. After the repair they performed test and sent me the results of their test showing a perfect sinewave no kinks or wrinkles. I understand this test is now part of their QA/QC procedure and a paper is included as standard with all units now being shipped showing the results of this test on the unit being sold. I believe they do a better and more thorough job of testing than they did before. Incidentally it took about 4 weeks to determine the problem get the proper parts and return it to me.

My unit now performs as well as it did before I sent it back. I have not noticed any sonic improvement eventhough they have corrected the sinewave plot.

In conclusion I see it was futile for me to try and improve my playback without addressing electricity. It was the best money I have spent for audio electronics.

Regards,

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