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PS Audio Power Plant Premier THD Output Results

I recently purchased a used PS Audio Power Plant Premier.

After installing the unit and plugging in my LED TV, Oppo Blu-Ray Player, and Marantz Pre-Amp I checked the PPP's THD output results and I am getting a 1% THD on the output.

I sent an email to PS Audio and was told that the PPP should be providing me with an THD output of .4 to .5% in order to be working properly. The tech at PS Audio suggested that my PPP may need to have the regenerator rebuilt at a cost of $250 plus I have to pay for shipping both ways so I am looking at a $300 repair bill.

Basically, I would like to hear from any PPP owners to find out what your THD output readings are when you have your connected gear powered on and running through the PPP.

I am a bit skeptical that there is a problem with my PPP as I am getting a THD output of 1% which is only .5% higher than what PS Audio claims my PPP should be delivering.
southernphoenix
lewinskih01
910 posts
 
Anyone knows how to measure THD in my mains without a PS Audio unit? Can you point me to article/website? Seems like a reasonable proxy to understand the likely impact of adding one of these to my system.

Thank you!
southernphoenix OP
11 posts
 
I think you would need an THD meter and from what I understand those are very expensive so your best bet is to buy a PPP or find someone who will let you use theirs to check your THD.

I am currently getting about 2.5% THD input which from what I have been told is very low.

It will depend on a number of factors including your A/C coming from your wall outlet in addition to the gear that you plug into the PPP. Each time you add a piece of gear to the PPP the THD input values will increase.

When I first hooked up my PPP I had my power amp hooked up to it and it increased the THD by over 0.5% on the input so I removed my power amp from the PPP. It also raised my THD output by that amount as well. It is better to not plug your power amp into the PPP.
b_limo's avatar
b_limo
2,289 posts
 
I was considering picking one of these up, used, but it was sold before I could get to it. The guy I was trying to get it from says he's helping ps audio sell b stock and gear that is traded in on newer components. What are these going for on the used market, and is this going to be a substantial improvement for me over a quintet or brickwall? I have s classe ca-150 which I could, or could not plug into the power conditioner, a z dac, a wadia 170i, a cd player, a ps3 and a t.v. Don't mean to hi jack the thread, figured I'd ask since we're talking ppp's
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sbrownnw
710 posts
 
Resurrecting an older thread here...

@southernphoenix, you mentioned 2.5% THD incoming is very low. Do you know what average and very high THD incoming measurements are?

I put a Power Plant Premier into my system this weekend. Very nice and well made unit and measured the following on sine wave mode:

Inputs: 115v, 6.8% THD
Outputs: 120v, .8% THD

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