Audioquest Niagara 1200 Noise-Dissipation System with Pass Labs INT 25

Hello everyone. I'm currently uncertain about whether I should invest in an Audioquest Niagara 1200 Noise-Dissipation System. I brought this unit home to test its impact and I believe I can perceive enhanced clarity, improved microdynamics, instrument separation and so on. However, I'm cautious about potential biases in my hearing and the influence of psychoacoustics in this situation.

I'm interested in hearing from anyone who has tried a similar setup with Pass Labs equipment. Considering the specifications and the inside parts of the Audioquest Niagara 1200, do you think it has the potential to negatively affect the music signal?

  • Level-X Linear Noise-Dissipation Technology: More than 19 octaves of AC differential filtering (20kHz–1Ghz in excess of 24dB) with linear response, optimized for varying line and load impedance
  • Patented Ground-Noise Dissipation (All outlets): 2 banks of direction-controlled ground-noise dissipation
  • Non-Sacrificial Surge Protection: Withstands multiple AC surges and spikes up to 6000V/3000A without sustaining damage—sonically non-invasive
  • Maximum RMS Input Current: 15 Amps (RMS)
  • Outlets: Source (5); High-Current (2)
  • Dimensions: 19.4" W x 3.2 H" x 7.5" D
  • Weight: 18lbs. (US); 8.16kg.


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Official Court Jester
Joined 2003
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just an observation ....... strictly comparison-sake ....... INT25 having much more parts, but followed with much lesser BS from its publicity department

though, I'm common Peasant, what do I know about direction-controlled ground-noise dissipation

in short - I'm not expecting that doing anything more than mild mains filter in form of distribution box does

one word about level of workmanship - if that I see is is - solid core directly tighten with screw (Schuko sockets) ....... that's no-no; with time copper is creeping under pressure of screw tip, and we know what follows

solid core wire must have metal plate lip as direct pressure element, to avoid screw biting to small pressure area

I know I'm splittin' da hair here, but price of 1K Greenies demands hair splittin'
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My thoughts on AC filtering are that CM noise is worse than diff. mode and needs balanced power to address. Balanced power units are rare, for some reason. And Class A loads shouldn't need reserves. Finally, filtering much above 120Hz is easy and becomes worthless in upper octaves. The Amir guy should be right about that.

This could blow into timeless debate way beyond this forum, I know.
Joined 2011
Paid Member
Buy one or, even better, two used Topaz isolation transformers on eBay. Connect them between your AC mains and your audio gear. Voila, common mode noise is drastically attenuated. If you've connected two isolation transformers in cascade, your common mode noise is attenuated (drastically squared).