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Does the audio power filter have any effect?
Can the audio power filter not be connected to the amplifier? The audio power filter must have inductive components, which sometimes causes the high-power equipment to "shrink"? What is the difference between non-inductive filtering and sensible filtering?
The phase of the power supply is reversed. What is the impact?
Must the audio power filter be grounded before it can be used?
(If you just like music, like to enjoy music life and not how to burn, take a look at the following paragraph)
"Farewell to the era of dragging the board" is not only for enthusiasts, but also for friends who like to enjoy music and enjoy life!
What is power pollution? My family will not be affected, right? Why use a filter?
To make a simple analogy: For electrical appliances, the power supply is like the upstream water source: if the water source in the home is polluted, what kind of high-grade kitchen utensils you can use can not get the smell of sewage in the food. Similarly, if the power supply is affected The pollution, any pollution in the upstream will be brought to every electrical appliance with the current, resulting in "the quality of any good equipment will be buried." To quote a senior enthusiast: "When this electricity is supplied to our audio system, it is like the blood in our body is contaminated by foreign objects, which will cause illness. Imagine how the combination can be heard in this situation?"
Due to the complex power environment in today, the noise interference noise in the power supply can be said to be more and more, everywhere: lightning will cause sharp pulses in the power grid; various electric drills, wood cutting machines, nailers, etc. Electric equipment work will cause interference, noise will enter our home with the transmission and distribution line; the start and stop of the motor in the nearby factory will cause grid interference, home hair dryer, all kinds of electrical appliances (soap hood, refrigerator, electric fan, air conditioner, etc.) Motor start-stop and so on will cause clutter and noise in the power grid. These clutter interferences and noise will seriously affect the audio-visual effects of Hi-Fi and AV audio systems (for example, the power horn has a "chopper wave" sound). As for your home being unaffected, you can think about whether the above is consistent with the environment around your home.
The most close example: My family lives in a new residential building in Shanghai. The neighbors who stayed in more than 40 buildings next year did not break the decoration. I tried to bypass the filter and connect it directly to the patch panel. The result was a treble thorn and the violin detail was wrung out. Some enthusiasts think that the sound of the sound pulled away from other electrical appliances should be no problem: this method can not eliminate the pollution inside the power grid.
The sound filter is a product designed and developed for the current Hi-Fi and AV equipment because it uses the "contaminated power supply" and cannot fully utilize the functions of the equipment. It can effectively eliminate the common mode and differential mode in the power grid. Interference and noise (the so-called "purified power supply". Below is a comparison chart obtained before and after using the filter. It can be seen that the filter completely filters out the high-frequency interference on the radio wave. The electric wave curve becomes smooth without burrs, which can make It suppresses the clutter current, the dynamic internal resistance changes are low, and the output current is fast. The conversion to the words of the audition effect can make the sound of Hi-Fi and AV sound system transparent, high resolution, wide sound quality, background. The level is clear, the details are rich, and the low frequency dynamic extension is good, so that you can enjoy the perfect high-fidelity music and clear images (because there are many machines at home, I used the oscilloscope in the friend's lab to try some of the first models. The filtering effect is the most stable with the 3000 type, and the non-inductive patent type is smoother than the sensible waveform).
Does the audio power filter have any effect? The enthusiasts who are often just in contact with the product will always ask me this question with doubt. Some friends on the Internet say "I can't hear it!" In addition to using the above-mentioned filter before and after the effect map to give you a favorable reference, I I would also like to ask you a question: When you finally decided to upgrade a pair of thousands of dollars of wire, when you went to a friend's house to listen to the effect of his set of thousands of dollars of equipment, is it that some people feel good? It’s awful, but some people think that the effect is just the same? In fact, sometimes a fever is a feeling of hearing, the effect is good or general, it can be discussed under the influence of the environment and its own. We often hear fans say "this time is more detailed than before the last upgrade." "The background level is clearer." In addition to listening, there is a feeling of listening to music for a long time. Some enthusiasts may be more polluted because of the original electricity in their homes. After connecting the filter, there is a feeling of "reborn". For some of the best equipments, as long as they can improve the effect, in fact, is there a "finishing the finishing touch"? A lot of friends are spending a lot of money on a line and changing a joint. Isn't that the pursuit of this? Fever beauty is able to constantly pursue perfection. If the sound quality is greatly improved, is it even more valuable? At the same time, from a more rational point of view, just add a sound power filter to the price of one-tenth of the good wire, so that the sound effect can be further improved, then from the cost-benefit The return on investment of audio power filters is far more than many other devices. Can the audio power filter not be connected to the amplifier? The audio power filter must have inductive components, which sometimes causes the high-power equipment to "shrink"? What is the difference between non-inductive filtering and sensible filtering? The answer is: can be connected; no; the difference is quite big, said that the audio power filter can not be connected to the amplifier before I have to talk about the non-inductive sound power filter: in fact, the non-inductive sound filter came out very early, the first card The sound power supply filter enjoys the national utility patent: its principle completely revolutionizes the traditional technique of limiting the bandwidth by using the original inductance to achieve high-frequency noise filtering, because the first non-inductive filter uses transistor filtering technology, the whole filter Without an inductive device, there is no inductive reactance. Since the non-inductive filter has no obstruction to the large current change, and there is no delay or other influence, the power amplifier can be safely connected to the non-inductive power supply filter--so that the front and rear stages use the current through the non-inductive filtering, The use of filtering in the pre-stage makes the sound quality even higher, because this way completely separates the power supply pollution. With the above-mentioned preparation, the amplifier can actually be connected to some audio power filters (note, here some "Represents the "non-inductive filter"). When I said this paragraph, especially when talking about "the sound filter can't be connected to the power amplifier" is a misunderstanding, many of my friends have some disdain at the beginning: then why are some sellers and "senior" enthusiasts on the Internet not like this? think? In fact, it can be understood that the principle of the early audio power filter used is inductive filtering, even the famous old brand of Furukawa abroad is no exception. At the same time, the carrier of the network can sometimes not eliminate outdated information. The original comments and posts can still be repeatedly clicked by people and passed down one by one. This makes it necessary to change the concept of early formation for a while, but I have always insisted on the truth. : It is gold, it will shine sooner or later. For the difference between the sense and the non-inductive filter: due to the difference of the non-inductive filter principle, the non-inductive filter can make the suppression of the clutter current better, the dynamic internal resistance change is lower, the output current is correspondingly faster, and the sound quality is wider. The background level is clearer, the details are richer, and the low frequency dynamic extension is better. If the filter has an independent DC regulated power supply as a filter supply, it can provide a stable static operating point for the transistor filter circuit, which can make the filter more stable, and this technology has also been able to achieve the patented flagship model 3000. Realization (this is ahead of foreign top brands, and domestic machines can achieve such technological leadership, which has always made me very proud. Domestically produced machines have an unrivaled advantage in price: only foreign counterparts Six to one-tenth, and the domestic machine is becoming more and more perfect in the process, and the workmanship is fine, which makes the domestic filter become my choice. Add a few words and feelings and influence on the sound quality and purchase. Difference: For some high-burning people, the configuration is good, the music range is wide, the power amplifier pushes the speaker and the power is high. The filter with the original inductor will feel "shrink" at some time, the sound quality is distorted, then if you Have selected the filter, so please only let the sound source filter the wave, the rear stage can be solved directly through the wall plug - for you still build It is best to use a non-inductive filter, so that you can not only have no need to worry about the impact, but also have better sound quality. For many people who just want to listen to music, especially just want to sing karaoke, occasionally put the disc If your requirements for the range of the range are not very wide, or the power post-stage and subwoofer consumption is not very large, the filter effect of the filter method is good, and the filter with the sense is not so straightforward on the Internet: What's more, there is still some delay in singing karaoke itself - but using a filter that is not sensitive is also a good choice, because in fact, there is no difference in price, and the filter is not brought. More good sound quality, but also left enough space for future upgrades. The phase of the power supply is reversed, what effect? ​​The impact is greatly! Some filters are equipped with devices that automatically detect whether the wall power phase is reversed. Once it is reversed, it will turn red until it is adjusted. Because the first filter has the function of automatically detecting the power phase, many buyers (without opening the network) I have often encountered it before. I am impatient with it - please be patient with this, because the phase of the power supply has a crucial impact on the sound quality - you can go online to see : How many people are calling their top equipment sound quality? It seems that there is no general set of equipment, and some even very little. The result is repeated disassembly and assembly, please see the experts, and finally find out that the reason is in the phase of their own power supply. It is reversed. There are some ways to check whether the plug phase on the wall of the house is reversed: you can refer to Li Ge’s article on power supply, which teaches a lot of methods, but because of the use of electrician equipment, like me It is only a rookie who can change the fuse. These are not very common in the home, so I am very satisfied with the equipment that can detect the phase by myself----the sound filter can detect whether the phase is correct or not. Very good machine is undoubtedly the icing on the cake. Is the audio power filter must be grounded before it can be used? I once saw a fan in a forum saying that "the sound source filter must be grounded before it can be used. Otherwise, it will be an isolation transformer, but the impedance will be small." So I studied the filtering principle: the ground wire is not unusable. However, for audiophiles, the sound source filter is best used for grounding. Because the current interference to the sound is divided into two types: one is common mode interference, and the other is differential mode interference. The common mode interference is filtered off through the ground, while the differential mode interference is filtered by the original inductor (for the sense filter) or the transistor (for the non-inductive filter). Interference is the main disturbance. The relative impedance of the isolation transformer is quite high, but the effect is worse. When purchasing, you should compare the internal design drawings. "Farewell to the era of dragging the board" is not only for enthusiasts, but also for friends who like to enjoy music and enjoy life! Don't let your good equipment mess up on a dirty tow board! When I saw a set of expensive equipment for my friends, it was so indiscriminately inserted on a plastic tow board. In fact, it was very heartbreaking: I don’t know if I can’t sell it, if the quality of the tow board is less, I don’t care for those baby. equipment? In fact, each player's own equipment is baby, no matter what the price. In this way, investing less than 2% to 5% of the price of the main equipment to invest in an audio power filter to control the source of sound quality, while enjoying a high-grade visual enjoyment, is undoubtedly a super-smart investment. As far as I am concerned, I prefer that my power supply is the same as the equipment, full of fever, strong metal and good craftsmanship. I am Xiaoning who is more eager to let the sound world say goodbye to the era of dragging the board. Look at the following two pictures, how do you feel? Figure 2 sees the following picture, is it true that many enthusiasts associate with the tow board that has been used for many years in their own home? I have also seen a friend's excellent pile of equipment inserted in the same "historical" dragline as the one below, which is called a sweat. .
Figure 3 The following picture shows the equipment of a Hong Kong enthusiast. The purple-red circle is a contending 2000 filter. Does it have a lot of fever equipment? 
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