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Isotek EVO3 Syncro

Regular price $2,795.00 USD
Regular price Sale price $2,795.00 USD
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Syncro is a high performance power cable, which incorporates unique DC-cancelling electronics, that rebalances the mains sine wave on the zero volts line to dramatically reduce/silence transformer hum. Syncro uses high purity silver plated Ohno continuous cast copper conductors of 3sqmm and FEP dielectric with double shielding for maximum RFI rejection. This sophisticated product is 16A rated and can be used independently for a single component, or in combination with another IsoTek power cleaner as an upgrade to deliver a fully rebalanced sine wave across all output sockets.







  • Suitable for all audio or AV systems
  • DC on the mains cancellation
  • Reduces/eliminates transformer hum by replacing the mains sine wave on the zero volts line
  • Use before existing power cleaners for performance upgrade
  • Fully star-earthed network
  • High grade power cable featuring, Ohno continuous cast silver plated copper conductors with FEP dielectric. Various cable terminations available.



As one would expect the internal wiring of any IsoTek product is of the highest standard, ultra pure Ohno Continuous Cast copper solid core conductor strands with silver-plating offers low resistance and high amperage. A Fluorinated Ethylene Propylene (FEP) helix is wound around the conductor before an extruded FEP dielectric protects the conductor and creates a Virtual Dielectric of Air (VDA). This construction gives unrivalled performance and gives the ultimate low resistance, high performance internal power delivery system.

IsoTek’s internal wiring synergizes with the range of IsoTek power cables. One critical but overlooked area is maintaining commonality of design and material properties though an audio wiring loom, be it signal carrying cables or your power cable network.



Every IsoTek product uses the finest grade electrical components, many custom made, using the highest quality metals and materials which are specifically designed for purpose. Quality doesn’t stop at parts but also extends into the PCB designs, which maintain high levels of amperage and extraordinarily low levels of resistance, using up to eight times the general standard of copper prior to pure silver plating.

Internal wiring also uses high purity coppers combined with silver plating, with either Fluorinated Ethylene Propylene (FEP) dielectric or IsoTek’s Virtual Dielectric of Air (VDA), where a FEP tube is wound around the conductor before an extruded FEP dielectric protects this construction giving unrivalled performance and the ultimate low resistance, high performance internal power delivery system.



From a high quality audio point of view, mains electricity needs two factors; a nice 50 or 60Hz sine wave supplied from a very low impedance source, without radio frequency noise. The low impedance makes for a near constant voltage regardless of how much power is used in the surrounding area. In reality we can typically expect around 5% fluctuation. The very low impedance of the mains, which is way below 1 ohm at 50 or 60Hz is not maintained when approaching radio frequencies (> 50 ohms > 100 kHz) and acts as an aerial (antenna) inviting RF noise.

IsoTek’s power cleaning circuits are designed to reduce impedance whilst remaining safe as well as correcting well into the audio frequency bands. This is not only a judgment from sound electrical engineering, but it also follows the codes of electrical safety, which are independently assessed.



Technical papers state that Kirchhoff’s circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirchhoff. This generalized the work of Georg Ohm and preceded the work of James Clerk Maxwell. Widely used in electrical engineering, they are also called Kirchhoff’s rules or simply Kirchhoff’s laws. These laws can be applied in time and frequency domains and form the basis for network analysis.

The guiding principles for IsoTek circuits are driven by Kirchhoff’s two current laws, a simple analogy would be that for every litre of water placed into a water distribution system we would expect to get the same out.

To put it another way, Kirchhoff and Gauss described how seemingly impossible problems could be resolved by the concept of a town. If traffic flows on a circular orbital road around the town there is no effect on the town. However, if traffic enters the town, then there will be an effect on the town, and however many cars that enter eventually have to leave. The structure of that town will have either a positive or negative effect on that migration. In electronics this is also true. We must totally respect the signal path as, whether one wishes it or not, ultimately everything will be in the signal path to a greater or lesser degree.



Differential Mode mains noise is created by all electrical appliances – everything with a power supply, in fact. This includes your microwave oven, your television and your computer, as well as every hi-fi component you own.

Common Mode mains noise is often referred to as RFI – transmitted frequencies that surround us but we cannot see. For example, imagine how much data is transmitted by smartphones and tablets; cheap power cables act as aerials (antennas) for these unwanted frequencies.



IsoTek delivers absolute power, unrestricted current delivery within what the power company can supply, and regulations allow. Generally, for power amplifiers or high wattage electronics IsoTek provides output which offers extremely low impedance and low DCR, this completely eliminates (within the concepts of power filtering) any possibility of current restriction and enhances dynamic range, the impedance of the chain back to the power station being far larger. When power is contaminated, dynamic range is reduced.

It is impossible to get more than 100% out of the mains supply. The very principle of AC power is that it doesn’t store energy in the transmission system. It is therefore impossible to store energy in an AC system by the very principles by which it works. There can be no so-called power reserve, thus a power reserve within an AC circuit in the truest sense of the word does not and cannot exist.

Power reserve would require the voltage to increase as ohms law insists it must, saying a circuit doesn’t sag isn’t a reserve of power. The AC waveform goes between maximum and minimum points at 50 Hz in 10 mS, it then swings to the maximum negative value. At 20 mS a full cycle is achieved. Therefore, in fact the average values of an AC waveform is zero. Only as a power wave can it be positive, this is due to the law of squared negatives. It looks like a ballooned sine wave where the value of 45 degrees is 0.5 not 0.7071 from a trigonometric table. Were this only a voltage wave it would have a long-term value of zero! As far as energy storage is concerned zero is the value of stored energy.

Direct Current resistance (DCR) will cause sag. To put it in other words, a system has to be developed which does not limit the power reserve of the power station, meaning a circuit needs to have extremely low resistance whilst maintaining sufficiently high inductance. When done correctly and in perfect balance the inductance is virtually zero at 50/60 Hz and the Direct Current resistance (DCR) is also very close to zero. Therefore, an ideal filter circuit must maintain zero Ohms resistance DC (or very close) and considerable AC resistance to noise above 50/60 Hz. Despite statements to the contrary, this is precisely where correctly specified materials matter most. Whilst some might consider these ‘exotic’ they represent a critical and important part of the function and appropriate to use. Remarkably IsoTek filter designs can maintain very low resistance at 50/60Hz but have very high amounts of noise cancellation above that frequency.

Most AC circuits are reactive – produce a reaction either from the power drawn or the circuit itself, put simply they are not pure resistors and behave like a capacitance and resistance or an inductance and resistance. In an ideal world the only allowable impediment is resistance and ideally this needs to be extremely low. A dilemma, do you want high transient power, or do you want heavy filtration – amazingly you can have both, but one must have components of the very highest quality, which are designed specifically for purpose with totally correct architecture. This is extremely complex and has resulted in the design of specialist parts; these do not exist outside the world of specialist power engineering and are unique to IsoTek designs.



As part of our on-going commitment to the highest standards of customer service, IsoTek offers you the opportunity to extend the standard 2 years product warranty to 3 years, free of charge.

Simply REGISTER YOUR PURCHASE with IsoTek. We do not share your personal details with any third parties without your permission.



The Syncro is a high quality power cable designed to dramatically reduce/silence transformer hum when transformers within equipment, typically power amplifiers, mechanically vibrate. Syncro can also be used as a ‘pre-filter’ device that can be used with any power conditioning system.

The Syncro circuit is housed in a precision machined aluminum tube measuring 220mm in length, 63mm in diameter. Syncro incorporates unique DC-cancelling electronics that rebalance the mains sine wave on the zero volts line, to dramatically reduce/silence transformer hum; the circuit synchronizes the mains supply to provide a perfectly symmetrical sine wave, which also delivers significant sonic improvement when used with any hi-fi separates.

The Syncro cable uses high purity silver plated Ohno contionous cast copper conductors with FEP dielectric and active shielding for maximum RFI rejection. The connectors are of high quality OFC with 24ct gold plating.




IsoTek Syncro - Read More

"The acid test of any component is what happens upon its removal. Do you say ‘oh well’ and put it back in the box, or do you immediately plug the thing back in place. The Syncro is very much in the latter camp. You know that magic audio quality you only get late at night? Syncro helps unlock that sound, whenever you listen" - Alan Sircom

soundbites - Read More

"With the Extreme cable, bass seemed to be almost artificial in nature, as if it was being propped up by scaffolding. With the Syncro, those same lower frequencies exhibited a shape and structure. A highly impressive piece of kit."



"Used as a replacement power cord, Syncro offers really serious improvements. These improvements are further emphasised if it’s used with a power distribution or conditioning system, where the cable can service a whole system as opposed to just an amplifier. Thanks to its sine wave rebalancing technology and revolutionary DC noise eliminating effects, Syncro solves problems with transformer buzz, thus protecting one’s
valuable equipment and preserving the musical integrity of the system. It’sreally not a question of whether to purchase, but when – which of course comes down to each individual’s budget. But the key point is that Syncro is unique, and uniquely effective; there has never been a proper solution to the problem that Syncro tackles, until now.."


IsoTek EVO3 Syncro - Read More

"The IsoTek EVO3 Syncro is definitely an effective upgrade for the EVO3 Aquarius. It reduces the risk of humming mains transformers and supports the Aquarius, like the entire system, in reproducing its characteristics. Of course, the investment of a good 1,600 euros needs to be carefully considered. IsoTek recommends the Syncro for systems with a value of 3,000 – 13,000 euros. I would go one step further and recommend the combination of EVO3 Aquarius and Syncro for systems worth at least 10,000 euros. "


IsoTek EVO3 Syncro - Read More

"I couldn't imagine using the Isotek EVO 3 Synchro in my system before the test. But once you've heard it, it's now hard to imagine life without this power cable - there's an acute risk of infection." - Olaf Sturm


IsoTek EVO3 Syncro - Read More

"In order to hear the biggest difference between EVO3 Syncro and Power 2.5, I picked the second song "Alborada del gracioso" from "Spanish Impressions". There is a bass drum with full texture, strong strength and unparalleled energy. I turned up the volume and listened. You can even enjoy the breathtaking momentum of EVO3 Syncro. Exciting and satisfying!"




CONDUCTOR SIZE 3 x 3.0sqmm (square conductor strands)
CONDUCTOR MATERIAL Silver-plated Ohno Continuous Cast Copper
DIELECTRIC Flourinated Ethylene Propylene (FEP)
SHIELD Oxygen free copper braid (OFC)
OUTER JACKET High flexibility PVC

2m standard (custom lengths available)




24ct gold plated audiophile-grade connectors

Suitable for all high-end audio components CD players, preamps, tuners, power ams, Blu-ray players, music servers, TVs, soundbars and more!