Tell me why I'm tossing the mainframe and the mainframe I'm tossing and continuing to toss.

The topic was caused by another altar friend. I said why I tossed the mainframe instead of a mature cd player. I thought about it and gave my reasons.

The content of today's post is different from my previous post, because it is endless. The toss continues. . . . . .

My opinion on CD player;

With the development of cd player today, there is a feeling of being at the end of the road. In terms of sound source, cd opportunities have reached an insurmountable bottleneck. A master player is enough, and there is no doubt that pk will drop the cd player at the same price. This is determined by nature. In the sound system, the best part is the sound source, followed by the power amplifier, and finally the speaker. This is my understanding. Welcome to clap bricks.

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To sum up, maybe one day I will knock down my mainframe and go directly to find a good player. But at least for now, there are too few such products and few choices. So many manufacturers all over the world have invested so much money and equipment in traditional cd players that there is a sustainable and large-scale market. No one will give up voluntarily, and the bigger the scale, the less willing to let go. This is determined by the profit-seeking nature of industrial capital. But no one can stop the wheel of history. Once the problems of copyright, intellectual property, communication and so on are solved by high-definition audio, the traditional cd player should die. Or a cd may become a plaything for a few people. .

So I chose the computer system as my audio source CAS.

System panorama:

The USB output of pc-specific audio host is decoded by hilo's coaxial input through Athena interface, and HILO's full-screen output is to the active speaker of FOCAL TWIN6 BE, Hercules tripod.

Audio host:

1. At the beginning, the chassis of the main engine was Streacom FC5, which is relatively flat and can use large boards. Later, considering the space and heat dissipation, we chose a higher Streacom FC 10. This is a reliable heat pipe cooling box with ash, solid materials, acceptable weight and enough space. With the micro-atx motherboard, almost half the space is available. You can move the graphics card, power supply and ssd outside the scope of the motherboard.

Sadly, I chose black as the color of the chassis, and when I got home, I found that the silver model was better with other equipment.

Number 2.2. The CPU adopts Xeon E3 1230V3, and the fan-free heat pipe dissipates heat through the chassis. In order to avoid the electromagnetic interference caused by the high cpu running, I chose Zhiqiang's E3 processor, and its performance is above 90%, because I only use it to play music, and no other software is installed. Generally, when playing music or high-definition movies, the utilization rate of cpu is below 5%.

3. The motherboard chooses the small boards of ASUS ROG series-Eagle Z87 and FC 10, which have good power supply and are well-known in the industry for their excellent design, exquisite materials and fine workmanship. Large boards can be used. Considering that the linear power supply may be tossed in the future, this microplate is chosen to save space. After installing the motherboard, there is almost half the space, and components such as graphics card, DC-ATX power board and ssd can be easily arranged.

4. The choice of memory is the server memory with good stability, and the heat sink is installed, which can also play a role of partial shielding. Because my computer is mainly used for playing sound, Jriver runs in memory. I told you that my memory is hotter than the video card. Can you believe it? The fact is that the memory is a little hot, but the graphics card heat pipe is not.

5. The storage device uses a solid-state hard disk. Although the SSD has little interference to the system, there is room in the chassis, so please also leave the scope of the motherboard. Fix it on the back of the front panel with blue rubber. There is no traditional hard disk. The vibration and electromagnetic leakage of traditional hard disk are serious injuries. ，F4 n！ P8 d/U+X； Z

6. The video card uses EVGA 750. The original graphics card has a fan, which is converted into four heat pipes to dissipate heat through the chassis. The graphics card moves the graphics card out of the scope of the motherboard through the adapter card, shielding the graphics card and sound card that come with the motherboard, and reducing the interference of the graphics card and sound card to the system.

7. The power supply is DC module+chrysanthemum power supply. The DC ATX power board is as far away from the motherboard as possible. The power supply of the motherboard and ssd uses the Cadas golden ratio 24p, 8p and 4p custom lines; The power supply of chrysanthemum water is 16V30A, which is also chosen for greater prosperity. The plan was 35V30A, but it was out of stock. The one with the goods is in poor condition. The power consumption of my system is estimated to be about 50-60w, and the output of water gathering power supply is adjusted to 12v, 8A. In this way, lower ripple and noise can be obtained by using the lowest DC output of chrysanthemum water.

8. The power cord from the water gathering power supply to DC-ATX uses 15.5 Cadas golden ratio cable, and the connector uses Nutrick's four-core cannon plug and female socket. Cannon connector is much better than DC5.5/2.5 interface.

9. The power supply for water gathering used to be the D 15S office of Obo, and the household power supply has applied to the power supply bureau for access to the audio private line. Pirelli and JPS wall wires will be adopted for the entrance line, and special distribution box will be adopted. German ABL will be adopted for air opening and leakage protection.

10, the current short board of the host is still in the graphics card, which has no independent power supply, but takes power from the motherboard. Once the graphics card is fully loaded, it will deteriorate the power supply of the motherboard. This is also the reason why I choose ASUS small board, which is more reliable in power supply and power processing. However, my graphics card is basically in standby state, and the monitor is turned on only when I choose songs, and it is basically closed at other times. Thanks to Jriver, with your playlist, it only takes a few seconds to choose songs. Hmm, so this short board is not much shorter.

1 1. About heat dissipation and power consumption: By the way, the power consumption of the host is very low when listening. No power meter, no test. But it can also be felt from the surface of the chassis. There is no thermal sensation on the heat pipe side of the graphics card. The radiating side of cpu heat pipe is slightly hot but not hot. During the Mid-Autumn Festival, the reading of chrysanthemum power supply (12V input) is: 3-6A at startup, the minimum value is greater than 2A, the current is unstable at startup, it is greater than 2A before self-inspection and 3-6a after self-inspection, mainly fluctuating at 3-5A; The audio phase current is 2.0A to 2.5A, with an average of about 2.2; Playing high-definition power supply, the current is 2.2-2.8A, with an average of 2.4 or 2.5A. The daily power consumption of the host is below 30w, which is ideal for low power consumption.

12. Regarding the temperature of cpu and motherboard, the temperature should not be too high, which will affect the sound quality. When the room temperature is 27 or 8 degrees in summer, the motherboard temperature is 38 degrees, the cpu temperature is 4 1 degree, the ssd temperature is 30 degrees, and the graphics card temperature is 35 degrees; Touching the cpu heat pipe by hand has the feeling of temperature and temperature, but there is no feeling of heating, and the touching temperature is lower than the cpu core temperature. Copy test 15 minutes, CPU temperature soared to 78 degrees, motherboard 67 degrees, graphics card 63 degrees. When the copier is finished, the sound quality will drop immediately after playing audio, which is manifested in the decrease of sound smoothness, the unbearable treble and overtone, and the middle and low frequencies seem to have little effect.

13. We have ordered the flagship version of Yiheng USB purification processor and look forward to a positive upgrade. The forum next door has a good evaluation of this Dongdong.

September 16, there will be surprises as soon as the hand is turned on. I hope there will be better performance after stewing chicken. If you think it's good, post another post with an interface.

At 14.2 1, I got the power supply of Weiss int204+psu 10 1, and I was cooking chicken.

15.2 1 connect the black sata cable and listen at night.

Personally, the indoor environment of the above host is not worse than the layout of a professional cd player. Its short board is still on the motherboard, if only there was a motherboard specially designed for audio.

The comparison between Pchifi and cd player has a long history and has been debated for a long time. It's hard to draw a conclusion about which is better or worse. Only time is the final judge.

Whether you choose pchifi or traditional cd player, it is just a tool to enjoy music. It's not worth arguing about, it hurts to be angry.