Ask us about 6 MONTHS 0 INTEREST thru PayPal

In stock for immediate shipment.

 Save $1,056.00 for a limited time during the current promo

   Includes a $400.00 Core Power Gold power cord 

        Includes a $60.00 copper duplex

We now also have the 240 volt version in stock

In the March 2020 Positive Feedback review they said:

"The reason this review is easy, is because the DEEP=CORE works. Starting with the 5u4g rectifier tube, the faint hum was gone. It was replaced by an inky black background. Simple, easily, measurable, and effective. I assumed that replacing the 5u4g with the 5AR4 would likely reduce hum. Instead to my surprise I was greeted once again with an inky back background. No hum, no hiss, just silence. Of course listening to music sounded great, and I felt like bass was cleaner. To have no audible noise from an 8 watt single ended tube amp with 0 feedback using a 104dB efficient headphone is simply unreal and justifies the DEEP=COREs purchase for me."   "So, do I recommend the DEEP=CORE?  Absolutely! I for one I am keeping mine. Its effects are clearly audible in my system, and I am always all about lowering my noise floor."   "Based on the fact that I do not have a dedicated circuit for my audio equipment, and I have appliances that run on the same circuit, the DEEP=CORE is simply a no brainer and a must have for me."   Read the entire review here: https://positive-feedback.com/reviews/hardware-reviews/core-power-deep-core/

The Deep Core 1800 is a multi-function power conditioner that re-defines the category. it is a full 15 amp, 1800 watt unit good for amps and all other components.

It is designed to run in front of any power    conditioner and upgrade the sonics

Here is the latest customer feedback:

Hi Walter,  For months I hesitated in adding a Deep Core to my 1800 Core unit, as I thought my PS AUDIO Duet coupled with the 1800 would be sufficient for cleaning the power.  Occasionally I would email Walter for his input, and he said it did other things that other conditioners do not. So I finally got one.

Well, it may be the BEST decision I’ve ever made in my years as an audiophile!!  The dynamics, noise floor, realism, and ease of effortless musical flow are unbelievable for an under 1K purchase!!!  It’s like a new system, and sounds like one costing much more.  I am truly blown away at the upgrade!  The control on back of the unit to fine tune the sound is amazing unto itself!  These products truly deliver, and I am one happy listener right now!!  Can not recommend enough!  If you’re on the fence, just do it!!  

Call me amazed at Core Power, and I’ve never been led down a wrong road yet in all my dealings with Walter either!!!

Thanks so much...Brian.

See the the 90 second Tone Audio video at:

https://www.youtube.com/watch?v=vooEXOSSnz0

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 the ToneAudio Dec 2019 review they say:

"Bottom line, it works"

"After trying the Deep Core in a few different system configurations, it unmistakably does reveal more music with no shortcomings. Transients aren’t compromised, and the bottom end is not smeared – another sin that more than one power conditioner has committed during the audition process. Best of all, more musical detail is revealed, without the mid to high range becoming etched, harsh, or overemphasized. This is much harder than it sounds. That’s why most power products ultimately end up being unplugged in favor of the existing devil in the wall socket."

Read the entire review here:

https://www.tonepublications.com/review/the-deep-core-1800-power-conditioner/?fbclid=IwAR1CHmOP7ery3bkjb4HqPE2oOLZNlYXK56sbT6xol1DFGO0Ap2VGe_YP9jU

In their December 2019 review Stereotimes summed with:

"Placing the DEEP=CORE 1800 as the front end for power in a variety of configurations, I noted that the signal was indeed enhanced – more palpable, more engaged, with a touch more life to dynamics and cleaner, with a touch of blacker background in quiet areas. These attributes were subtle but apparent."

Read the entire review at:

http://v2.stereotimes.com/post/core-power-technologies-deepcore-1800/

Here is another user feedback:
Walter, I want to thank you for the advice on your Deep Core product line. I purchased the Deep Core and a Diamond AC cable and was astounded on how a very good system started knocking at the door of using the word "Magical" to describe the improvement your products brought to my audio system. The presentation is so stunning that you don’t think about words to describe it, you sit and listen.  These products opens more of the heart and soul of the musicians and the music. Thank you, thank you, and thank you again for your recommendations on these products. JS

The Deep Core 1800 is designed to not only provide clean, spur free power but it also allows the user to optimize the power delivery via a Contour Control user adjustment. The optimization of the power delivery interface can significantly affect sound quality as the power company is a major contributor to attributes such as poor noise floor and dynamic range of the system.

The Deep Core 1800 can be used with almost any system configuration providing optimized power for both source components and power amplifiers.

It will work as a stand alone device, in front of the Equi=Core 1800 or older 1200, 300 etc, or in front of any other power conditioner you may already own. However, it works best when used in front of a quality power conditioner, like our Equi=Core 1000 or 1800 MK2/3 balanced power conditioners.

The Deep Core 1800 has the following major attributes;

• An Input circuit that features a unique DC snubber which stops any DC, constant or transient, imposed upon the power lines from passing through the Deep Core and into the system. DC can saturate the transformers or source components and cause voltage fluctuations. DC is a major problem on almost all power lines. Some worse than others. (See the graph and note how the Deep=Core removes all DC)
• After the DC snubber the Deep Core has a complex common mode filter designed to suppress any RF signals that may be riding on the power lines. This RF energy can raise the noise floor and affect the total dynamic range of the system. The EMI filter is implemented with high quality magnetics that will not saturate under high current conditions.
• After the common mode filter a second EMI/RFI filter is implemented that further cleanses the power of unwanted out of band products. This additional filter includes integrated surge suppression to insure that no high voltage transients, such as the voltage from a lightning strike, will pass through the system.
• The last stage of the Deep Core contains the adjustable CONTOUR CONTROL power delivery interface. This interface changes the relationship between neutral and ground and allows the user to optimize the power delivery to your system. This unique capability allows the power to be optimized for each individual system.

The Deep Core 1800 should be connected in front of ANY power conditioner as it is the “final” word in preparing your AC for a good power conditioner. Its unique ability to not only fully cleanse AC power sources of  DC, EMI and RFI noise, as well as to match your AC to your individual components, is unique among competing products. It can also be the foundation of a full A/C cleaning system solution.
 

Size and weight 8 x 8 x 3.5"   (12x12x12 shipping box)
7 pounds  (13 pounds shipping weight)

Buy with confidence from AudiogoN’s #1 rated dealer by feedback.

New orders typically ship in 1-2 business days of placement.

We accept PayPal, Visa, Discover, AMEX, MasterCard and money orders.

Call me at 770-667-5633 to discuss this superb line conditioner

GA & HI residents add sales tax.

Brands carried: Audio GD electronics, Audio GE Cadenza speakers, Bluesound music servers & streamers, Core Power Technologies A/V power conditioners & cables, DSPeaker room correction, Emerald Physics amplifiers, Focal headphones, Fuse Box by Swiss Digital, HifiMan headphones, LSA speakers, amps, headphones and turntables, Marantz Reference, Melco servers, MOFI turntables & speakers, Music Hall turntables, Ortofon cartridges, Project turntables, Puron line conditioners, Quad speakers, headphones & electronics, Raal headphones, Silverline Audio speakers, SPL Electronics, Sumiko cartridges, Wharfedale speakers, Wireworld cables, XSA Vanguard speakers & electronics, Zesto Audio tube electronics

Sales policies on the Underwood Hifi Inc. website at www.underwoodhifi.com