In the world of audiophile accessories, power filters are a special topic. Some consider them an essential part of the system, others consider them a waste of money. The truth, as always, lies somewhere in the middle and depends heavily on the quality of the “outlet” itself.
Torus Power is not just an extension cord with a couple of varistors. These are devices based on a powerful isolation transformer. They are positioned as active means of protection and power conditioning for demanding audio and video equipment.
The RM 8 CE model is one of the top models in the line, designed for serious systems. Its price makes you wonder: what exactly does it offer and is the result worth the investment? In essence, it is a test of how expensive and yet justified the “diet” for your equipment can be.
Not all power supplies are equally useful
I do not dispute the benefits of using a transformer. In theory, both filtering and galvanic isolation certainly work, but in practice… And in practice and from experience, I can say that among the entire class of high-end power supplies, I have encountered many that are strange and of questionable usefulness. I have observed several examples of negative or ambiguous effects when using stabilizers and power conditioners of various designs, as well as voltage regenerators. At the same time, the complexity, power, and high cost of the device do not guarantee anything in themselves.
No guarantees are given in practice, nor is there any clear technical justification—it sometimes remains only a correct theory. In reality, it is often the case that everything is fine in theory, but the sound becomes dull and lifeless, losing its normal attack and dynamics. And this is even in comparison with simply connecting to an average home dedicated line with a simple but high-quality splitter.
I have encountered fewer devices of all types (from complex regenerators to purist 1:1 transformers) that did not make the sound worse than those that did. That's how it is. Of all the manufacturers, and with my extensive experience, I have a positive opinion of only a few companies and a very small number of devices of this class.
Switch, indicator, and circuit breaker
Separately, I can share my experience with transformer devices. I had the opportunity to study in practice some industrial “audiophile” solutions and specialized transformers made in our country. To be honest, I didn't like everything: one way or another, there were shortcomings everywhere. The only device that worked perfectly was some rare Japanese transformer that a friend of mine bought from who knows where. This marvel weighed about 60 kg, had corresponding dimensions, and was simply a “bare” transformer with screw terminals.
Why is the positive effect so rare? Because the transformer must be correctly calculated and correctly manufactured from the appropriate materials. The effect of defects in one part or another is especially noticeable in our local custom-made products. They made it, but the sound of the device, to put it mildly, does not improve. They calculated it with expertise, but the execution in the hardware ruined the result.
Torus Power RM 8 CE rear panel
In addition, it is important to understand that everyone's systems are different, consumer devices are also different, and it would be fine if they only consumed power — some also return interference to the network. And the networks themselves are also different: in some cases, everything is fine or close to it, while in others, the voltage fluctuates constantly. There may be interference from switching power supplies, or the voltage may always be low, with dips. In the latter case, a transformer alone will not help. Therefore, different solutions must be selected for different cases, individually and taking into account all the specifics. However, I like the idea of an isolating transformer itself, especially when the network has exactly the problems that the transformer is capable of solving.
Good power supply is like a proper diet for an audio system: invisible, but very important. Torus Power RM 8 CE is not just a mains filter, but a serious voltage cleaner that removes interference, stabilizes the current, and provides equipment with “clean” energy, without noise and surges. Yes, it costs as much as a mini-computer, but for those who can hear the difference in sound, it is an investment in the honesty and depth of music. This is not a fashionable gadget, but a tool for those who want their system to sound as intended — without distortion and background noise.
Large, heavy, pragmatic
Torus Power is a Canadian manufacturer with a good reputation, but I am not very familiar with their products. Their devices are rarely found on our secondary market, and even on the North American market, where there should be more of them, there are very few people willing to sell them. However, there are discussions on thematic resources and reviews from owners, which are often positive. In practice, I became interested in this manufacturer after working with a system powered by Torus Power during one of my tests. I became interested because, at first glance, I did not notice any negative effects. However, when I was offered the device for testing, I still had my doubts, and the reason why is explained above.
Torus Power RM 8 CE, bottom view
Before proceeding with testing, it is necessary to examine the device and look inside. Externally, it is a metal box the size of a decent power amplifier and weighing 34 kg. It has a minimalist design in black with minimal markings and no decoration whatsoever. The only customization option available is the front panel. It can be black, as in our case, or silver. It can also be designed for separate installation or for mounting in a rack. The panels can be changed, and the price of the original device is the same for all options.
On the front panel, there is a single switch with a backlight indicating that the device is turned on. This switch also serves as a circuit breaker.
On the rear panel, there is one input connector and five output connectors (note that they are not audiophile gold-plated). Plus a screw ground terminal. That's it, nothing else. There is no division of the output connectors into groups either — they are all connected to the same transformer anyway.
Inside the Torus Power RM 8 CE, everything is simple and solid.
Inside, the design is neat and impressive. A huge toroidal transformer manufactured by the Canadian company Plitron is secured using several vibration isolators. All wiring is made with cable that has a clear margin in terms of cross-section; there is double insulation everywhere, and the assembly itself is very neat. Apart from the transformer, circuit breaker, and internal wiring, there is only one small board inside the case, which houses the surge protection system. That's it, nothing else. Therefore, apart from finding a place for this device in the system (or nearby) and connecting the components with polarity checks, there is nothing else to do.
Another significant and pleasing feature is that the device is completely silent. The huge transformer does not emit any humming noise at all.
The unit takes up almost as much space in the rack as a power amplifier.
I decided to organize the test as follows: choose a room that is normally suitable for sound, a well-tuned sound system, and combine all this with the worst possible power supply conditions. Not so bad, of course, that the equipment simply cannot be turned on, but roughly what a resident of an old house or suburb might encounter, where very expensive housing is often combined with a lousy power grid. And yes, during the test, be sure to use a regular power line with average wall outlets instead of a dedicated audio line, spicing it up with some Turkish/Chinese splitter and a couple of average surge protectors for third-party equipment. And try listening with and without Torus, switching components back and forth one by one, from one extreme state, when everything is powered just like that, to when everything is connected through Torus Power RM 8.
Nuances, or how to ruin everything
The testing was conducted at the Nazarov Electronics Gallery. The system was assembled on the fly and turned out as follows: the source was the familiar Aqua Acoustic Quality Formula xHD DAC with the same computer and software I had used to test this DAC before. The preamplifier and power amplifier were Copland (CTA 305 and CTA 506), which I am also quite familiar with and predictable. Plus, Totem Forest speakers (again, a proven option) and Tellurium cabling of a more or less decent level, but without introducing any noticeable distortions into the system and not falling short in terms of quality.
The system used to test the Torus Power RM 8 CE
The components are not new, so there was no need to warm anything up, just let the tubes in the amplifier reach the required operating temperature. Then we could start the test.
First, I listened to the system with everything connected to the Torus Power RM 8. The result was a good, smooth sound, in which you could hear the character of each component and the overall harmony. With a rather chamber-like presentation, I listened calmly to a wide variety of recordings, including symphonic music, and there was no obvious negativity in the sound. I can't say that Torus suppressed the dynamics: even at low volumes, the sound was harmonious and clear, without sharpness or distortion. In other words, you could hear the character of the system, the fact that the components were well matched and worked well together. And familiar recordings, based on formal criteria — dynamics, detail, timbral authenticity, correct stage construction — sounded quite decent and recognizable, with the right priorities. For further experiments, this turned out to be exactly the basis I needed. And then I decided to ruin everything…
One of the active contributors to sound degradation, or how NOT to do it
The DAC was the first to be switched to “unhealthy” mode. Observations suggested that it would be more logical to start with the source and leave the tube power amplifier until last. What can I say? The difference is audible, no matter how you look at it, in any mode of any test. The sound became slightly convex in the middle, less harmonious, with a sharp and uncomfortable upper middle range and emphasized high frequencies. The bass took on a certain cardboard quality. And this despite the fact that the DAC's power supply is quite competent. But it was not for nothing that we deliberately chose poor power supply conditions for the test — it's more obvious that way.
Next, I disconnected the preamplifier from the Torus. This manipulation resulted in a noticeable softening of the sound: the Copland sounded too tube-like, which is not typical for it. I have encountered this preamplifier model in several systems, and it has the manufacturer's signature sound, in which the disadvantages of tube sound are almost inaudible. But here, there was warmth, sluggishness, and slight muddiness in the sound — all in some quantity.
Finally, I switched the power amplifier to the mains. Even softer, even more questions about the dynamics, even more elevated mids. I listened to the system like this for about twenty minutes, and then I didn't want to experiment anymore. The sound was so distorted… And if you add impulse PSUs (especially those known to cause distortion), this addition is audible. With symphonic music, it felt like a fairground amateur band was playing instead of a symphony orchestra. Reverse power connection also gradually restored the sound to its original state.
So, the Torus Power RM 8 CE is not just a power filter. It is a serious device for those who believe that the quality of the power supply directly affects the sound and picture. It does not mask the problems of “dirty” electricity, but truly solves them.
Yes, its price makes you think twice. It is an investment that is justified only in high-quality systems where each component has already been brought to a high level. You are unlikely to hear the difference when connecting it to ordinary equipment.
Therefore, it can be compared to a proper diet for your audio and video equipment. It does not provide “fast food” in the form of simple protection against power surges, but provides clean, stable, and complete “nutrition.” If your signal source and speakers (or projector) are capable of revealing this, you will get a calmer, more detailed, and more focused sound, and the picture may become slightly more stable and contrasty.
Ultimately, the Torus Power RM 8 CE is not for everyone, but for discerning enthusiasts who have fine-tuned their systems down to the smallest detail. If you are one of them and are looking for the finishing touch, this filter definitely deserves your closest attention.
