DIY by Jon Risch AC filter according to JR Power Conditioner/Surge Protector Review by Lukasz Fikus

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Model: AC filter according to JR
Category: Power Conditioner/Surge Protector
Suggested Retail Price: 60 $
Description: Low cost high performance AC conditioner
Manufacturer URL: Not Available

Review by Lukasz Fikus on October 25, 1999 at 13:19:01
IP Address: 195.94.192.78 		Add Your Review
for the AC filter according to JR

As a follow-up to my previous rewiew I can add the following:

The construction has been slightly modified following countless listening tests in some 10 high-end systems.
I decided to reduce the number of turns in each coil.
I increased the wire size. Now I use 2 mm wire with 6 turns per coil (instead of 30 turns).
All copper ends are tinted with solder to avoid contact degradation.

The sonic aspect of this filter is un-be-lie-vable ( I am not sure how to spell it correctly by syllable).
In all my high-end "career" nothing amazed me so much. Being a power EE I cant believe what I hear. Technically I filter the high RFI only, but the effect is monumental and 100% positive.

Some statistics:
I made 11 units of the filter (4 outlets each). I gave it to try to 10 people. 10 of them bought it. Half of them had other commercial units, and preferred my filter. Nobody had ONE negative comment, while other filters received lots of negative comments. So here we have no trade-offs at all!
Some new owners used terms like "jaw droppind", "impossible" , "like rebuilding my system AND room", etc.

It worked with the same result in digital systems (Tact Millenium and Micromega Trio transport with clock link to the amp) and in SET triode systems. Most amazing effect was in a system using Musical Fidelity SS amp.

I made no profit because it is my hobby, but I can imagine this should be a commercial hit worldwide.
Jon Risch - thank you !

Lukasz F.

Product Weakness: Absolutely none.
Product Strengths: acts as an improvement of every component at the same time. Best value for money ever.

Associated Equipment for this Review:
Amplifier: all
Preamplifier (or None if Integrated): all
Sources (CDP/Turntable): all
Speakers: all
Cables/Interconnects: all
Music Used (Genre/Selections): all
Room Comments/Treatments: all
Time Period/Length of Audition: 6 months
Type of Audition/Review: Product Owner

Follow Ups:


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