Quantum Science Audio Red AC Receptacle

Quantum Science Audio

(3 reviews) Write a Review
Adding to cart… The item has been added

QSA Red AC Receptacle

The Proof Lies In The Hearing


Our customers are raving about QSA AC receptacles. Expect a larger soundstage, more inner detail, and a more natural sounding presentation. The Red QSA AC has been crushing the most popular brands and models of AC receptacles out there. We like the QSA AC receptacles because once they are installed, they just work. If you have been hesitant to try the QSA fuses because of the risk of blowing a fuse, the QSA AC receptacles come very close to the performance of the fuses, without the risk. Powering a system that already has QSA fuses with the QSA receptacles advances performance by a significant measure.


Top Tip

If you think you need to replace all of the outlets in your power conditioner or distributor to receive a benefit, you would be wrong. The single most effective use of the receptacle is in the wall. It will benefit your entire system, even if you are running a power conditioner downstream. Our hypothesis is whatever noise it is blocking, it is taking a huge burden off of one's existing power conditioner by eliminating noise at the wall. We aren't kidding, this will be a shocking upgrade. We stand behind it with our 30-day money back guarantee.

About QSA Products

After 22 years of research and development, QSA Has launched a series of audio enhancing products that are confounding listeners with the level of performance improvement that they are attaining with these modest looking devices. Through their proprietary processes and treatments, these normal looking outlets and fuses are transformed into paradigm shifting audio products. 

Using the same processes and treatments as their highly regarded fuses, Quantum Science Audio are applying similar treatment to their line of AC receptacles. The colored hierarchy is much the same as well. Their sonic effects on components plugged into the AC receptacles are also similar, and even more beneficial if you have QSA fuses in your components.

Quantum Science Red AC

The Red AC Receptacle can sonically outperform any other AC receptacle on the market, except of course for their higher performance AC receptacles. That is our guarantee. We stand behind our products with our 30- day money back guarantee. All we ask is that your return the items in their original box, and undamaged. We know on an AC receptacle that you will need to install it, and that may mean a tiny nick here and there. Not to worry, we understand and will still refund you your purchase price.

What You Will Hear

With All QSA Products the first thing you will notice is that the midband and top end open up with a sense of relaxation and ease.  There is just a rightness, a wholeness when there should be wholeness, and separation when it occurs naturally. Bass will be quicker, dynamic, and have more detail. Voices and instruments will appear more transparent but with more harmonic realism, flesh/wood/brass tone, and focus. You will hear all of these improvements without straining. They will be obvious. As you move up the product line, you just get more. At times you might not think more exists, but it does. Everything you play, I don't care how bad, harsh or fatiguing the recording, it will sound better and in many cases, it will actually be listenable rather than fatiquing.

A Word On Break In

Initially, the AC receptacle will be a little strident, but will settle in over the next few days.


Q: I already have (insert brand name here) power conditioner. How will a wall receptacle improve the sound if the AC has to run through the power conditioner before getting to the components?

A: All I can say is it does. It makes a system wide, huge difference. Even though the AC coming from the wall receptacle has to flow through all of the filtering of the power conditioner. Whatever the QSA receptacles are doing to eliminate noise, your power conditioner is not filtering the same noise, and it will not hinder the performance of the QSA receptacle. Your power conditioner and the QSA receptacle are working on two different levels, and types of noise. I guarantee you will hear a difference. 

Q: Should I get rid of my power conditioner then?

A: Maybe, but probably not. As I said, power conditioners provide RF filtering, and other benefits. The QSA receptacles seem to work on different types of noise. All I know is that there is a significant improvement in the sound, even if you keep your power conditioner. I would say experiment if you have the option to. Perhaps even audition one of Tweek Geek's QSA power distributors along with the wall receptacle.

Need More Outlets?

Try the Tweek Geek built QSA Power Distributor. It houses 2 duplex receptacles, and also incorporates a QSA fuse.


3 Reviews Hide Reviews Show Reviews

  • 4
    QSA Red Receptacle

    Posted by Shane on 30th Dec 2022

    Great product, really opened up soundstage and detail. Liked it so much I ordered the next level up in the product line.

  • 5

    Posted by Dan Curtis on 26th Apr 2022

    I am blown away by what adding the Red QSA receptacle has done for my system. I put it in the wall and ran a Swisscables Diamond power cord to the Gigawat powerprime and it transformed the sound of what I thought was an excellent sounding system already! It improved the sound quality in every way, I'm so happy that my brother happened upon the QSA products, I read everything I could find and decided to take the jump and try the receptacle. I had no idea it would turn out to be anywhere near as good as it has. I have been so happy with it that I also decide to get the QSA Violet fuse for my Qualiton a50i integrated --WOW!!

  • 5
    QSA Red Receptacle

    Posted by Dan on 18th Apr 2022

    I must admit I was a little skeptical about the qsa receptacles before pulling the trigger on their red one! It’s been three days since it was installed and whatever skepticism I had has been replaced by utter amazement at what this product has done for the sound of my system. I put it in the wall and am running a Swisscables diamond power cord from it to my gigawat powerprime the improvement in sound has been much more than I had expected! I am so glad I decided to go for it , there’s no way it’s going back