WHICH POWER CONDITIONER IS BETTER PASSIVE OR ACTIVE WITH ISOLATION TRANSFORMERS


Looking to purchase a Power Conditioner to reduce the noise floor in my system as well as to protect my system from electric spikes. The two types of conditioners seem to be as follows:

  1. Passive conditioners such as an Audience AR-12 T4 which claims that passive conditioning with the use of chips is the way to go because their filtering is better accomplished without the use of isolation transformers. The proponents of passive seem to claim that the use of isolation transformers adds noise to the components in the chain.
  2. Active or non passive-An example would be the Niagra 3000, 5000 &7000 by Audioquest which all use Isolation transformers to accomplish the filtering. Most of the conditioners I see advertised seem to accomplish filtering with the use of isolation transformers.
  3. My question is what type is better and why? Any recommendations would be appreciated. My budget is $4000-$5000.00, would consider used, a/k/a pre-owned. 
  4. Thank you for your input. 

 

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Doesn’t any device that galvanically isolates the current prevent all noise?  That’s why so may manufacturers use galvanic isolation in their circuits to clean data feeds.  Seems to me that between galvanic isolation and the use of a filter and capacitor to ensure adequate current, you solve your problem-assuming you actually have a noise problem to begin with.  I’ve added DC filtering to my circuit because of all the digital equipment in my house and the neighborhood

I demoed and/or purchased a number of conditioners, regenerators over the years, Shunyata, Audience, PS Audio, Audioquest, I could see all being effective for some, so many variables to consider. For me BPT 3.5 Signature with custom Plitron transformer was the winner, further diy customization via film filtering caps and Oyaide R1 AC outlets. Always prefer amps straight into wall on dedicated 20amp, 10AWG dedicated circuit, this with anything from class a/b SS to 7wpc SET. transients always negatively affected by going through any of the pathways through conditioners, regenerators.

@langla4 Galvanic isolation is a type is active power conditioning as well as a safety circuit to prevents high current from flowing to sensitive components or prevent shock.  It uses electrical (isolation transformer) and physical isolation (gap) to assure the input and output is separated.  Passive power conditioning uses capacitors, inductors, and resistors to filter noise from the power without actively changing the signal rather than isolating circuits.  Theoretically, galvanic isolation prevents ground loops and potential differences between circuits by completely separating them, while passive power conditioning filters electrical noise on the mains (high-frequency disturbance).  So, application is similar to prevent noise, but slightly different as well.