Quantum Science Audio

QSA US 20 Amp Circuit Breaker

$711.00
Shipping calculated at checkout.
QSA Circuit Breaker Level: Violet ($711)
Power conditioning begins at the breaker box, and there is no better-sounding circuit breaker than the QSA audiophile circuit breaker.

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QSA Audiophile Circuit Breaker


Price Is For One US, 20A Breaker With QSA Treatment


Tweek Geek Speek Blog Review of the QSA Black/Red breaker


This panel mount audiophile circuit breaker is rated for 20 amp circuits and certified for home use. They have been treated with the QSA process which transforms it's performance when powering audio equipment. This process is not a modification, it does not change the breaker's ability to operate normally. It is a treatment to the conductors that ultimately lowers the noise floor on the power flowing through it. Audio manufacturers have used cryogenics, high voltage, low amperage current, and I am sure other processes to affect the sonic performance of electronics and cables. the idea is nothing new, but the MMAT process is unlike any of them in terms of the powerful sonic results it delivers.

Why is an $X breaker so expensive on your site? I can buy this at Home Depot for $Y.

It's a very fair point. While the material cost is certainly way, way lower than our asking price, it's not the physical material that makes up the bulk of the cost. It is the QSA processing of the breaker that is the majority of the cost. The QSA process is proprietary and a closely guarded trade secret. My guess is their pricing structure is based on whatever energy or time is spent processing the conductors, and I am also certain it is based on the level of sonic benefit they achieve with the process. It's a process they developed over 25 years, and I am sure at considerable up-front expense. It's not unlike software development. Your not paying for a physical item, you are paying for what the software does for you. 

Results In Our System


Before the QSA Breaker, we had a builder grade common 20 amp breaker connecting our audio circuit to our studio system, we had a short run (12 feet) of high quality 10AWG wiring in the wall from the breaker box to the Gold QSA wall receptacle. Our Kiyora power conditioner was plugged into the Gold QSA, and we were using both plug and iec jitter adapters from QSA on our other components plugged into the Kiyora. So as you can see, our system had plenty of QSA power products installed prior to the circuit breaker, so our expectations were moderate.
Bottom line, the circuit breaker provided a MAJOR difference in dimensionality, naturalness and liquidity of the music being produced by components in the circuit. It went way beyond our expectations.

Choosing The Right Breaker


Circuit breakers for the home come in several brands and sizes. You will want to choose the same brand and model that matches your breaker panel and the circuit amperage. 

The easiest way to find that out is by opening the front door on your breaker panel and taking note of what brand and model breaker is currently used in it. 

If you want to be more precise, have an electrician pull the breaker you are planning to replace, identifying the brand, model, and attachment mechanism that fastens it to the breaker panel. Buy a new breaker of the same exact make and model, and contact us. We will provide instructions for sending the breaker in for processing.


We do not treat GFCI type breakers, as the treatment itself will trip the breaker during the process. We also limit treatment to single pole breakers only.