Quantum Science Audio

QSA Ultra Black/Red AC Receptacle

Shipping calculated at checkout.
An essential audio system tweak. A QSA wall receptacle will improve resolution, soundstage, and overall tonal/timbre balance in your system. Highly recommended!

NOTE: QSA occasionally has order backlogs, and it may take up to 8 weeks to receive your item if we do not have it in stock. Please be patient, it will be worth the wait!

Pickup available at Shop location

Usually ready in 2-4 days

QSA Ultra Black/Red AC Receptacle

The Proof Lies In The Hearing



Once you hear what the Red/Black Ultra receptacle from QSA can do, you will no longer think of it as a tweek or accessory. The change it will yield throughout your entire system when installed at the wall will turn your world upside-down. If you have been hesitating to install the QSA fuses inside your components, the QSA AC receptacles will be a nearly equivalent experience. If you already have QSA fuses installed in your system, an AC receptacle at the wall will take the performance of your entire system higher. Believe it.

The Ultra Black/Red AC Receptacle can sonically outperform any other AC receptacle on the market. It is the top level of their AC receptacle line, and analogous to theBlack/Red Fuse. In fact, having the two acting together on your state of the art audio components will bring their sonics to new heights. That is our guarantee. We stand behind our products with in-home audition program that allows you to try one before you buy.

Top Tip

If you think you need to replace all of the outlets in your power conditioner or distributor, 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.

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.


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.