Saturday, September 24, 2016

Review: Core Power Technologies Equi=Core 300

I have a lot of experience with power conditioning as it pertains to the audio system. Power cords, Power conditioning, Power supplies, and in-wall power. I've heard, expermented, tried, failed and succeeded at just about everything power as it relates to an audio system. Power is important. Wait, let me rephrase that, CLEAN power is important. It can make or break the performance of an audio component or system.

Enter Core Power

Core Power Technologies is a relatively new company making power cords with a balanced audio transformer wired in. A person can use them on a single component, or plug them into a power strip and use the balanced power to supply several components. They offer 5 models of their Equi=Core models, differentiated by the amount of power they can safely handle without limiting current. They make 50, 150, 300, 1200 and 1800 watt versions.

WTF is Balanced Power?

Our normal AC at the wall outlet consists of three "legs", hot, neutral, and ground. On the hot side,  +/- 120v of Alternating Current (AC) is presented, and it is said to possess 120 volts to ground.

Balanced power "splits" the 120v current into 60 volt legs. +60 on the hot and -60 on the neutral. There are still 120 volts present on the circuit, but it is now divided up, with the two AC legs being 180 degrees out of phase with one another.

With the 2 AC legs being out of phase, the noise riding the AC lines is cancelled out, but 120 volts are still delivered to your audio components. This is what makes balanced power such an effective noise reducing agent.


To figure what components I could safely plug in to the Equi=Core 300 I had to consult the owner's manuals for the components I own. When they failed to mention wattage consumption, I looked at the value of the internal mains fuses (given in amps) and multiplied that times the voltage (120 volts).

  • Auralic Aries 120 volts x .5 amp = 60 watts peak (probably way less)
  • Auralic Taurus Pre 120 volts x 1 amp = 50 watts peak
  • Aqua Acoustic La Scala MKII 120 volts x 12.5 amp = 1500 watts peak (it uses tubes. Tubes in general consume more power)

Plugging In

So the Aqua La Scala was out, but I could use the 300 on the Aries and Taurus. I decided to allow the Equi=Core 300 to power both the preamp and my streamer via a Wireworld Matrix power strip. The Equi-Core would be working at about 1/3 of it's capacity, leaving lots of headroom in case it was needed. Headroom is always good.

Before we go any further, let me tell you what was filtering the power to my system. The same thing that has been filtering the power for 8 years, the Bybee Stealth. Nothing has displaced it as my ultimate reference. I can count only 2 other conditioners that came close, and they both cost much more. It was a totally unfair comparison with the Stealth costing over $6,000 and the Equi=Core costing only $899 as configured. But that is my measuring stick, and what I am intimitely familiar with.

I plugged the Equi=Core 300 to the wall, and connected the other end to a Wireworld Matrix power strip. The Matrix is a classic. Inexpensive and does no harm to the current being delivered through it. That made it perfect for connecting the Equi=Core to more than one component. The unit I received from Core Power Technologies was new, so I left the components on 24/7 for about a week before writing up my evaluation. That being said, straight out of the box the 300 made a noticeably quiet presentation.


I will get straight to the point. The $899 Equi=Core 300 was quiet, did not limit dynamics, and did not change the tonal characteristics of the music being reproduced. First the quiet, I expected this. Balanced power is quiet, but usually the transformers involved in this process can slow current delivery, or alter the tone of the music. None of this happened. Even with the added integral power cord, which is another item that can limit dynamics or change the tone. This thing was transparent, and able to easily deliver current to the Aries and Taurus.

This is important, because anti-power conditioning audiophiles lodge these 2 reasons as to why they go "straight in to the wall" more than anything. Many times their gripe is legit. Many power conditioners are fraught with a tradeoff. You can have clean mids and highs, but you will lose dynamic range. You will have a great midrange, but the highs may be rolled off. This did not happen with the Equi=Core. The Equi=Core impressed the heck out of me with it's tranparency. I expected the quiet, as I am familiar with balanced power. I did not expect this thing to be so darn transparent. The transparency is what makes the Equi-Core 300 such a killer value. Anything else I have heard in this price range either alters the tone or squashes dynamics. You usually have to pay A LOT more to get this kind of performance in a power conditioner.

Did the Equi=Core beat the Stealth? No, but it gave me 80% of what the Stealth does, and that to me is impressive for something that costs $899. I eventually plugged the Equi=Core into the Stealth at one point, allowing it to power the Taurus and Aries. The preamp and streamer were getting power from the Equi-Core, which was being fed power from the Bybee. What I got was an even blacker background than from the Stealth alone, with no sonic tradeoffs. Now if tradeoffs were going to show up, they would show up in this configuration. None, nothing. Just more quiet, and more music. Very impressive.


The Equi=Core 300 delivered clean, quiet power unlike anything I have heard in it's price range. This would not only benefit smaller, budget audio systems. It would be perfectly at home in very high performance audio systems. It could be used as a solo power conditioner, plugged into a power strip, or several could be used, each feeding individual components (within each Equi=Core's rated output of course).

If you've never tried power conditioning, try the Equi=Core. If you think you've got all the power condtioning you need, try the Equi=Core along with whatever  you are using. I think you will be pleasantly surprised at how much more you will be able to hear with it in your system.

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