Many of you are youngsters but QRT was originally a company started in 1997 called Quantum Resonance Technology.
They produced a line of power conditioners that generated a "quantum" field of some type that magically conditioned your power simply by proximity to their device.
They were brought out by Nordost (around 2008) who then jumped on the "quantum" thing and still push the idea (not sure if they use the same "technology" as QRT did in the early days).
You can read a review here (
http://www.soundstagenetwork.com/revequip/quantum_life_symphony.htm) of the original QRT product but to understand the key idea behind QRT we can use these quotes from the review:
In other words, certain laws of quantum mechanics predict that if the coherent electrons come into contact with the incoherent electrons in home electricity, those incoming electrons will behave coherently also. Within a few minutes, all of the electrons in your home will exhibit the coherent behavior of the electrons in the Symphony's circuitry. This coherent behavior lowers the noise floor of the electricity, and thus the noise floor of your audio/video system.
AND
When you connect one or two Symphonies to your main system, every other video display in the house looks better than you are used to seeing. The difference isn’t huge, and many will not notice it without consciously looking for it. But if you know what the images on your computer monitor look like or on the TV in your bedroom, both will get better when you connect the Symphony. Likewise, audio elsewhere in the house improves also; the kitchen radio sounds a little better, the TV sound in the family room is a little better, the rap coming from your 13-year-old’s room sounds better (as if that were possible!) -- you name it. QRT is indiscriminate, it seems. Whatever it does that makes the sound and/or image improve in your reference system, the same improvements happen everywhere around your house.
If you believe that a device can make ALL the electrons in your home all march to the same tune in coherence than these Nordost QRT products are for you.
It was quackery 25 years ago and still is today.
Peter
PS. You can see from the review date (Jan 2000) that breathless reviews of products that make an amazing difference to audio quality despite being based on snake oil are not a new phenomenon
PSS. As per Nordost's web site, QRT is branded against Qbase, QRT plugins (being QKOIL, QSINE, QVIBE, and QWAVE) , Qpoint, Qsourse, QNet, Qkore and Qline.
I know they use "Q" to indicate quantum but I am not sure (nor do I want to spend any time) determining if all the product ranges tout the use of the original QRT "IP" but many do discuss this type of effect. For example, we see "
The QPOINT Resonance Synchronizer emits a subtle field which manipulates all electromechanical resonances within its immediate proximity so that they resonate in unison with each other"
We then note, as per the web site, that Qbase uses "
Specifically optimized and modified QPOINT Technology" so Qbase does use the quantum concept