PurePower 3000 AC Regenerator Review

[Mort]

What problem is this device designed to solve?

 

[Geert]

What problem is this device designed to solve?

The PurePower website has a page of 10 potential issues their products intend to solve.

 

[Speedskater]

I wonder how it will do powering a big amp that has a Switch Mode Power Supply?
Both units will fight to control the line voltage.
If the line voltage increases, the SMPS will draw less current, so the regen (or some UPS's) will lower the line voltage, then the SMPS will draw more current.

 

[phoenixdogfan]

Thank you for the review, Amir. Nothing quite like paying $5k to add a noise generator that your own components will filter out anyway. Well, at least it's not a tube amp.

 

[Herbert Shooler]

I wanted to give it a -1,the best item to use here is no item at all it seems, dont use one and the price is horrific. Why do people want to use these useless items when the DAC/AMP etc psu converts the AC to DC and thats filtered. Its as much use as a perforated condom. or a concrete wheelchair in a swamp. Yet another 100 megaton bomb of truth from the master himself. Thankyou Amir

 

[dorirod]

Would something like the Bluetti APEX 300 Power Station be a lot better than this?

 

[sam_adams]

What problem is this device designed to solve?

Turning this:

Into this:

Great review @amirm!

 

[JeremyFife]

Thanks for the review Amirm, always good to read

However ... $5k ... adds noise, might help with problems that should really be fixed properly by an electrician at source ... No.

 

[NTK]

I was looking to see if this regenerator is fan cooled and found this picture. I am curious if the fans will be on and how loud they are if it is powering some big class A amps or tube amps that continuously draw a few hundred watts.
https://www.purepoweraps.com/images/winstream assembly 1.jpg

 

[michaelahess]

Just buy a double conversion UPS and stop being screwed by this kind of bs.

Amazon.com

 

[Thomas Savage]

All that noise and you didn't even bother to listen to it Amirm , ASR is going down the pan.

Always good to see things like this getting tested , thanks Amirm and thanks to the company.

 

[Thomas Savage]

Turning this:

View attachment 453870

Into this:

View attachment 453871

Great review @amirm!

There's more pleasurable ways of doing that if ones hell bent on financial ruin ..

 

[lc6]

Apart from reduction of the mains noise and harmonics, these type of devices frequently claim that they provide more instantanous power than a regular wall socket does, thanks to the energy stored in their built-in capacitors and/or batteries which their inverters can draw (e.g., see here). In other words, they claim to effectively reduce the impedance of the mains circuit for short periods of time, which should benefit reproduction of music peaks at very high volumes.

Therefore, in addition to the output spectrum, which addresses only the filtering aspect, they should also be tested with large dynamic loads; the name of this device suggests it is capable of 3 kW output. However, these types of tests would require a pretty elaborate high-power setup, so they are not easy to conduct.

 

[Timcognito]

This is approaching the cost of a whole house backup battery minus install. IIRC, In some systems all grid power passes through and is delivered by them.
This is what Google AI says about distortion

 

[777]

So when you plug-in a 360W load in such an outlet voltage will drop back to about 105V (assuming an 120V standard supply voltage). Altough that's not a crazy load, that voltage drop is already more than double of what's recommended by the National Electrical Code (NEC). If that's a problem you experience at home you better spend your 5k$ on improving the wiring I guess. The PurePower website has a page of 10 potential issues their products intend to solve, and impedance problems are not even being mentioned so it must be an edge case at best.

In many villages în Europe, at 230Vac, the impedance is at 5 ohm. USA is not the entire world.

 

[SuicideSquid]

What I find truly baffling about products like this are the prices.

Like, I get that there may be certain circumstances where filtration and battery backup might be wise. But what does this do that a $100 filtering power bar and a $300 UPS unit together, at less than 1/10th the price, don't? How is that $5,000 price justifiable in any way, except as a tax on audiophiles with more money than sense?

If this were $500 - heck, even if it were $1,000, I could see it being a potentially justifiable purchase for someone living in an area with dirty power and frequent brownouts. But for $5,000? There are a million better ways to spend your money.

 

[Cbdb2]

It is not about noise, it's about output impedance. Some electrical outlet may has 5 ohm's.

If you draw 10 amps you loose 50 volts? How do major appliances even work?

 

[Cbdb2]

they claim to effectively reduce the impedance of the mains circuit for short periods of time, which should benefit reproduction of music peaks at very high volumes.

Not if the device has a linear supply, and I dont know enough about class D amps but my gut says no difference there. Unless you have a ridiculuos mains impedance like 5 ohms.

 

[Speedskater]

these type of devices frequently claim that they provide more instantanous power than a regular wall socket does,

That's a solution in search of a problem.
Any wall outlet, can easily supply ten times its rated current for a good fraction of a second.

 

[NTK]

If you draw 10 amps you loose 50 volts? How do major appliances even work?

Not only that, it also means 500 W of heat (= I² R) is being generated and has to dissipate somewhere. This is the kind of things that starts fires and burn down houses.