Do Nordost QX4 purifiers worK? Upscale Audio is $1.649 vs. $2,700 so looks like a good buy

Looks like its being discontinued hence, the closeout "bargain" price? 

Nordost is one of the more polarizing brands. I use Nordost cables. You probably don't want to see  inside of the box. Likely disappointing if you see value as lot of parts inside a box.

Definitely a try it for yourself device. I couldn't hear "improvements" while others claimed they could, in a demo.

It's lipstick on a pig. 🐖🐷🐽

Two responses from folks who probably had no direct experience with QX4. Even as a stand-alone component, QX4 is worth checking out. I know I can’t imagine my system without it.
At $1649, it’s a bargain for what it does!

Upscale audio gives on real deals there turkeys.

^^^^^^
 WTF?

Blind tested with my family for years and it works. Gives strings voices percussion that last 5 % realness factor. increased resolution without fatigue. If the recording is great it will make it better, if it’s not good it will still be bad.
I downsized my system and moved my setup so didn’t have the proper distance from the wall, symmetrical setup that utmost important, so this device became less relevant. I find most people on this site expect an increase in performance without first having perfect positioning. If you have one speaker in a corner and the other without a boundary, spend your money elsewhere- you might get a bit more resolution or tone but go back to basic before you spend big money on cables and conditioners. If you have the basics down in my experience this is a good product to chase a bit more of the dream.