ADD-Powr by Coherence Systems --- Power Conditioning Products


Recent research into power conditioning approaches and products brought ADD-Powr to my attention. This company, and it’s products, were previously unknown to me.

The company, Coherence Systems, is based in Santa Monica, CA. and has been in business for some time.

An introduction and general overview can be found within their ’About Us’ page: https://add-powr.com/about

Nordost (in 2008) purchased the QRT technology that these folks developed.

Bill Steirhout is the proprietor and the brains behind the ADD-Powr product line.

The product line is listed here: https://add-powr.com/products

david_ten

Showing 1 response by kodak805

I re-read the Positive Feedback review on the ADD Power Sorcer X2:

https://positive-feedback.com/reviews/hardware-reviews/add-powr-sorcer-x2/

Some things bother me, especially at the price point. I know it is about what it does and not how it looks but the price point is high. I would expect a better appearance and construction.

For example, it is obviously a bent sheet metal enclosure. As such, I wonder if it radiates anything from those transformers. If it does, this will get back into the equipment and possibly the power cords if they are unshielded.  All those LED's blinking on and off are sure to negatively affect something.

The screws are not flush mounted or countersunk. That billboard sized brand name on the back of the unit is very tacky. All this means something to me. For example, the Akiko unit is vastly superior in construction at 2/3rds the asking price.

I previously owned the Akiko Corelli.  It is well made and contains no transformers.  However, I did not detect it doing anything and, despite its robust construction, radiates when subjected to a Klein Voltage Tester.  It also did not show a reduction in line noise when a AlphaLab Power Line Meter was inserted into the same dedicated line:

https://www.alphalabinc.com/product/plm


I sold the Akiko Corelli for the above reasons.

The last thing is the ADD unit contains transformers. I have managed to stay away from any kind of device which has transformers. They are noisy and radiate as i stated previously. Sure enough, the review states "It emits a very soft (but virtually unnoticeable) hum while in action."  It is always ironic to me when a unit designed to eliminate noise actually introduces it.

Given all this, I would personally pass. I do not care what it does. The Akiko may be superior or not and some of you already have one of those.

Just my humble opinion!