Core Power Technologies A/V

Explore Core Power Technologies A/V

Underwood Hifi owns Core Power Technologies A/V.  A/V because these conditioners are amazing on video gear as well as audio. We are now shipping the upgrade E=Q 1800 MK3 an upgrade to the highly reviewed EQ=1800 & MK2.  Deep Core 1800 is also now shipping.  We are at 770-667-5633 if you have any questions.

In the July 2023 Equi=Core 1800MK3 review in Positive Feedback they say:
"The Core Power EQUI=CORE 1800 MK3 is a solid improvement over the previous MK2. The inclusion of the six gold plated copper duplexes by default and their new Wide Band Balanced Power Transformer made the unit perform better then I remembered the MK2 performing."
"I highly suggest that before you go out and spend a small fortune on a power conditioner, that you at least start with the Core Power EQUI=CORE 1800 MK3. It is candidly better then most products out there at its retail price, and keeps up with products 2—3x its retail price."

Read the full review here:

On the older MK2 they originally said:
"So how does the performance of the Equi=Core stack up? To be frank, it is a giant killer."
"Making the switch to the Equi=Core removed that noise, and this alone left me quiet satisfied. As I listened to the system with the Equi=Core I also noticed a slightly more relaxed top end and more bass definition from my amplifier. I have found that tube amplifiers in particular really loved the Equi=Core 1800 MK2."
"The Equi=Core 1800 MK2 was extremely effective at killing transformer hum and vibration. The result was an inkier black background and more separation between instruments and artists."

Read the entire review at:

See the Equi=Core 600 video review at:

A New Day for AC Powered Equipment – Enter Core Power Technologies A/V Fully Balanced Power conditioners.

Equi=Core 600, 1000 and 1800 MK3 and Equi=Core 2400 are all now shipping.

See the youtube videos at:   "Magnificent sounding, it ain't coming back"

"It would be a crime not to give this little box one of our Exceptional Value Awards for 2017."

The Deep Core 1800 is an A/C power processor and surge protector that works with all conditioners or as a stand alone device.


CALL FOR OUR INTRO SPECIAL PRICING See the 90- second Tone Audio video at:

See our youtube video at:

In the Enjoy the Music review they sum with:

"In my review of the Equi=Core 1800, I stated that the effect it had was magical resulting in quieter backgrounds and a deeper three dimensional image. I really did not think it was possible to squeeze much more improvement out of the system until I inserted the Deep Core 1800 and then properly adjusted it. The improvement top to bottom was similar to the effect that occurs when you clean a camera lens. Everything snapped into clearer focus. The soundstage deepened with images locked solidly in place. I honestly didn't think it would make this much difference, but it did. Okay Walter, let me sum it up like this: You can't have the Deep Core back either."

Rufus Smith – Enjoy The Music  

In design for more than a year, Underwood Hifi has decided to begin to import their own cables under the Core Power Tech AV brand. Designed by some of the best Engineers in the world – these cables like all Underwood owned products represent unparalleled value at prices that bring sanity to the cable segment.