GoodSoundClub - Romy the Cat's Audio Site

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

Post Subject: The PurePower PP2000, update.Posted by Romy the Cat on: 12/11/2010

This morning I was listening Messiaen’s Tarantella-Symphony powering system from the bare AC lines. It was far from the sound I would like to have and I decided one more time to insult myself with PP2000. This time I decided to take another PP2000 unit. To my surprise Sound was not right but it was different result then I had the whole week. That picked my curiosity and let me for a couple hours marathon of re-listening all 3 of my PP2000 regenerators.

To my surprise, pleasure and horror they all turned out to be absolutely differently sounding.

PP2000 #1. This one that has been using all week - the updated my old PP2000 (new version of motherboard). This one the absolutely worst – large amount of unpleasant noise, hugely homogenized tone, no bass, no anything – just disaster. It runs fine on batteries with fine sound. This unit I did some very basic measurement and they were fine.

PP2000 #2. I do not get this unit. It does much less, practically no noise and no homogenization. It has some bass and in a way a clear bass. But something is very wrong in this sound, I can’t figure out what. It runs not identical but similar from buttery. I have no idea what is wrong with it, I did not measure it and I prefer do not use it.

PP2000 #3. This is a lucky bustard. It has practically no noise, no homogenization and it highlights the tones almost as good as my old PP2000 did. It has that precision, discrimination and authority in tonal and dynamic accents for which I so love the PP2000. It has a bit too shallow very lower bass and a bit general brightness that I did not remember the old unit had. It is not a lot but it there. It runs from buttery a very slightly better – picking the lower bass in partially getting rid of the business at HF. The way how this unit sound from butteries is how the properly functioning PP2000 shall sound.

The PP2000 #3 I think is useable, the first two units I am afraid not. I would like to have my old PP2000 back then I will have 2 find sounding PP2000 hopefully if PurePower will fix whatever is wrong with the new revision then I will get my third unit. Since the all so not even it is possible that the secret in some kind of calibration or adjustment that might be not done properly at PurePower. I did ask multiple times before they shipped them if the tested them and they told that they did. I did not measure my PP2000 #2 and PP2000 #3 but even my worst PP2000 (#1) measures fine. So, go figures that are responsible for sound in those units. If PurePower have more interest about subject of good sound and how to get it predictable then the situation might be a great opportunity to learn about it. Unfortunately it looks that PurePower more care about damage management. Boring and contra-productive.

The Cat

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