I have to say that recently, looking at the original drying list, I have found that more and more of the sun drying machine systems have been started. However, I have seen more comments on various "can't understand ah help." And recently, Aunt Zhang has pushed a variety of price-bearing ears such as AKG K701, DT880, 990, T90, etc., and it is still 600 Euro and has been looted. I believe that many of those who buy and buy must have no resistance to the colorists. Aunt Zhang tempted With many people even buying a good headset, the Walkman is really a waste of these headphones, some people intend to go to the Taiwanese system, but many people know that a machine can handle it, when you see a bunch of headphones can not be Things are in turmoil, so here's an introductory article on desktop machine knowledge.

Current mainstream

The so-called desktop computer system is a system that can combine different functions to form a system that can listen to songs (Of course, the all-in-one machine can perform all tasks in one machine, which will be described later). At present the common desktop system, said relatively simple point can be divided into these parts, turntable -> decoding -> amplifier (amp) -> audio (headphone) , as long as we understand this point, the other transformation in fact It is very simple, either to replace or merge, of course, the amplifier can also be divided into pre- and post-class. And a complex system can also include its electric offices, clocks, and more, more professional things. . The vinyl system, which I didn't understand, was skipped as a complicated article in this introductory article.

Although the headset is a simple description of the system is composed of turntables, decoding, amps, headphones , but some people still do not know exactly what is going on, what each function, there are some broadcast, one machine, etc. Into the concept of which, I will briefly talk about everything.

Turntable

Generally speaking, the turntables, especially the traditional turntables, are mostly referred to as CD turntables , that is, devices that simply read the CD content and then output it digitally. Of course, this is not always a reference to this type of traditional turntable, abbreviated as CPT. If it comes with decoding it is called CDP. Of course sometimes said that the turntable may also refer to some other devices that output digital signals , such as digital broadcasts, interfaces, and so on.

As an output, all its interfaces are generally RCA, BNC coaxial output, fiber output, I2S output, etc.

interface

The interface is functionally the same as a digital sound card and outputs digital signals through the computer. The PC+ interface as a whole is equivalent to replacing the turntable for digital output, but its technology is still in development. Most of the common interface input ports are USB, such as Athena, some lightning ports, lightning ports, and the same PCI-E interface as the built-in sound card, such as the AES16. Because the purpose is to replace the dial for digital output, the output is the same as the dial.

Broadcast

As the name suggests, this is the abbreviation of "digital player", which is also a substitute for a turntable. It can also be understood as a player for a desktop player. Its role is to play digital music files through the device itself. It is also a good substitute for turntables. Program, but the current technology is very immature , like LINN's broadcast prices are very expensive Poor landlords are still waiting for the development of digital broadcasting, hoping to make great progress after graduation. Digital broadcasting may have its own memory, it may be inserted into the hard disk, memory card or U disk, etc., and the output and turntable are no worse.

Webcast

This is based on the more new concept of streaming. It is no longer confined to the hard disk you insert. You can use DLNA to access your NAS to get music files to play. You can use the tablet or mobile phone to operate. For example, ARIES is currently the most domestic Good broadcast solution.

decoding

Decoding: Dana DAC-10

Decoding is much more familiar to everyone, also known as DAC, a word explanation is to turn the digital signal output from the turntable into an analog signal for output, it is also one of the factors that affect the sound. Many people think that choosing a decoding connection will do the trick. Most of the decoders also have an interface program in the decoding process. The decoded sound is still determined by the USB interface + decoding itself. It can improve the level of digital output. The strength of the decoding performance. The output of the input port is consistent with that of the turntable. The output is generally RCA single-ended and XLR balanced.

Pre-level

The former level is simple: It is the device that first magnifies the analog signal and adjusts the volume. The input and output are the same from the interface. The reason why the first enlargement is needed here is because it can better drive the later stage (probably . And because it has the ability to adjust the volume is also suitable for the active box.

After class

That is, the output signal of the preceding stage is finally amplified and then output to the passive box, and the rear stage cannot adjust the volume. Because of lack of understanding, it is better to speak less. Of course, this box will not be the main overview.

Amp

This should be what everyone is most familiar with, and in a word, the analog signal is amplified through the headphone port . In general, the output can be directly connected to the sound source, of course, can also be played on the front level, such as the STAX's official release is often connected to the front level play. By the way, it is also mentioned here that both the front and the rear amps and the amp have a gallbladder and a stone machine, that is, they use electron tubes or transistors to amplify them, and gallstones are combined with gallstones. . The earphone interface, from the amp's amp can see the headset port can be divided into 2 types, one is the common 6.35mm single-ended (in general, the machine rarely has a 3.5mm interface) and balance port, and The balance port is also divided into 4-core balance port and double triple-core balance port. And how to choose, according to the needs of your amp and your earphone interface (such as HD800, T1 common gameplay is to change the balance).

Sound source

Generally refers to the total name of all devices previously decoded. , here specifically for the following instructions.

All-in-one/merger

Everyone can find that each kind of machine has its own function, and it can be combined to complete all the functions. Although splits have the advantages of splitting, splits are highly complex and expensive, and it is difficult for some systems that are not particularly high-end to be well organized. Therefore, there are integrated machines and mergers.

For example, to combine power amplifiers, it is to merge the front and rear stages and connect them directly to the sound source. Then you can adjust the volume and pick up the box.

There is also CDP, which is a CD player with decoding. In general, CDP has its own tuning, which can ignore the problems of turntable and decoding. It is also a very common CD party's choice. Of course, this is also the case.

Many people think that we can call a computer to play it, we call it one machine , such as Tianlong DA-300USB DAC is one of the very common one machine, plug directly into the computer, install the driver, connect a headset can be used. And now many decodings come with USB and PO ports, all belonging to one machine. This is very suitable for those who have a limited budget and do not understand too much.

Of course, there are other combinations that incorporate some weird features. For example, PWD2 can have a webcast module and the M-DAC can clock out. Even an all-in-one machine can be very tossing, such as HILO.

Wire rod

That is to connect the media between various devices, different types of devices selected between the wire, the interface is also different, such as the computer to the turntable use the square port of the USB cable, turntable (interface, digital broadcast) to the decoded line using coaxial Lines (interfaces may be RCA, BNC, etc.), fiber optic lines (square or round), RJ45 network cables, HDMI cables, etc., and analog signals are transmitted between the audio source and the front stage, and the amp is the signal line (RCA or XLR).

Although it is very metaphysical, but have to admit this is true and useful, even if it is the digital line, since the read "Zhengguancun test HiFi cable is not metaphysical in the end," had to obey the influence of the data line . . . Although many people commented on the spray, but no one can explain why it is different, and it does look good or bad, then it means that there are indeed mistakes in the transmission of digital signals through different wires. This is also very passable in communications. Or why do we have so many error checking protocols for modern communication technology? The situation where the analog signal is interfered with by the outside world is even greater. Everyone can make up for it.

Other equipment

Because it is complicated and expensive, it simply mentions . For example, the clock, we know that the data transmission needs to provide a clock pulse, and responsible for providing this pulse is from the crystal, and because of the quality of the crystal, may produce jitter, and the DAC chip is synchronous, its transmission occurs Errors can cause unpredictable changes in the resulting sound, and the greatest role of the external clock is to use better crystals to provide better pulses to reduce jitter. As for whether you think it is necessary to spend a large price for this pulse stabilization, we only need to think about why many devices cannot synchronise their time with NTP, and why there are atomic clocks such a luxurious device. As for why we now can't feel mistakes in data transmission? This is a true sense of thanks to the IEEE.

Then we all know a piece of a paragraph that listens to the different electrical sounds of nuclear power, hydropower, and wind power. . Although very exaggerated, but no wind can not afford to wave, because playing these really have to play with electricity. The simplest experiment is to use a filter to insert a TV monitor to see it. The filter is just one of them. The processing of electricity also includes various specialized equipment such as cattle, electricity, and regeneration.

Filter Inserts: QLS F1000

In the end, simply speaking, it is also corresponding to the previously mentioned " turntable -> decoding -> amplifier (amp) -> stereo (headphone) ".

The turntable is responsible for the digital output, the decoding is responsible for the digital-to-analog conversion, and the amp is responsible for analog-amplified driving of the headset, which constitutes a complete system. The integrated machine incorporates a part of them to simplify the complexity of a machine for a machine, and to be more professional can also add other things. In fact, it is not really complicated.

Basically know this form, you can change indefinitely. For example, you can even connect the LO of Ipod Classic and FIIO X5 to the desktop amp via 3.5 to RCA. Here is where the front end is used as the audio source and the amp is connected to the desktop, or With the decoding of the digital broadcast directly connected to the amp, or the entire digital broadcast with PO direct broadcast in the installed songs can be heard, just like a large MP3, a machine collection of all functions.

Here I did not say anything about thrust, signal-to-noise ratio, dynamic range, nor did I say anything about chips, op amps. Because to tell the truth, it's really not useful to us. . Once my friend once said such a thing, to listen to the technical party's analysis is not as good as a local tyrant has played to say to force, and our group of technical parties convinced (absolutely not a black East God, Benedict’s party has also seen it I do, dare to collect his party money yet 2333 )! For example, although the parameters of 9018 are very beautiful, how many really do it? It may not be as good as a DA1 that can only solve 44.1. Some specific parameters can be learned, but for newcomers, it is more suitable to understand the sound of the product itself. The best way to audition is to audition. It is not possible to ask a friend to know. Isn't the meaning of these singles just like that? And regardless of fever, it's always best to have friends.

Then LZ sunburns its own equipment, and now dry Longsheng F1000 + Yi Ya CX-7E MP + FP030 + T1 temporary fever. If I don't have this T1, I really want to buy a 990 which is so cheap. ! Too poor to afford!

Family portrait

At the end of the day, people who truly want to continue their sound movement will sooner or later come to power. The song gives us moving, and a better environment for listening to songs will continue this beauty better. It's like a girlfriend. Love her and love her. It's true love. .

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