The headphones don t push the move to see what 20

Looking at the output, the PSP thrust is very small, which is no way, because the power is limited, and the same reason is that the PSP brightness is not good. Getting back to the point, one looks at the output, the second looks at the headphone impedance, first of all, the general output is 40 ohms, it is impossible to exceed 50 ohms, the card *** thrust is the largest J3, and the general one is 32 ohms. A power amplifier is added to a magic brick like the C4, and the thrust can reach 200 ohms.

Second, look at the impedance and sensitivity of the earphones, the general earbuds are 16 euros, and the flagship HiFi earbuds are generally 32 euros, but there are some strange ones, such as E5C (100 euros), ER4 (100 euros), dental plugs (130 euros), like these earbuds are not generally *** can do, and ear amps are needed. Sensitivity is also a very important indicator,AKG is an example in this regard,AKG K701The impedance is only 65 ohms,But you have to use tens of thousands of equipment to push,Because the sensitivity of large earphones is much lower than that of earbuds,Even if there is a sound,It may be that you can't accept the sound,This is a bad sound to push。 That's about it.

Whether the earphone pushes or not depends on the output power of the front-end (listening device).

We often use headphones when using them"The term "thrust" is used to describe the control that a device has over the headphones.

Headphone diaphragm amplitude.

It is related to voltage, but the control force is related to the current, high voltage, low current and low power can easily lead to insufficient control force, simply put, the coil does not have enough magnetic force to control the inertial movement of the diaphragm, then high current is needed to improve the magnetic field strength of the coil.

Strengthen the control of the coil on the inertial motion of the diaphragm, the current is strengthened, the voltage remains unchanged, and the overall output power rises.

In the case of the same voltage, the larger the current, the better the control force, that is, the thrust is often said to be good, and the increase of current needs to increase the output power of the interface on the basis of ensuring the voltage, so the output power can reflect the thrust of the front end. And impedance.

The larger the headphones, the more powerful the front end.

It is difficult to push more than sixty or seventy euros for ordinary ***, and there is no specific quantitative standard.

PSP is not recommended to put on any good headphones, the sound itself is not good, but the PSP thrust is actually slightly larger than the ordinary ***.

Hope it helps.

The most intuitive is that the sound is small, on the basis of which the sound appears tight, contracted, and cannot be released, and the sound quality is significantly improved when the thrust is enough on the front end.

Each earphone has several important parameters, such as impedance, such as sensitivity, such as frequency response range, most of these parameters may be the same, and it is not clear whether this earphone is good or bad, but this parameter can understand what kind of front-end environment this headset should work in The best way to see how much thrust the headset needs, I personally think that the most important parameter is not impedance, but sensitivity.

This is also a misunderstanding of many entry-level oil-burners, thinking that headphones with high impedance are not easy to push. However, impedance is not the decisive factor. Sensitivity is key.

Sensitivity, ruler sensitivity refers to the sound pressure level that can be emitted by the earphone when inputting 1 milliwatt of power into the earphone, assuming that the sensitivity of a certain earphone is 100 dB per milliwatt, that is, the loudness of 100 dB can be obtained by inputting 1 milliwatt of power.

If a standard sine wave is used as the signal source, only 1 [20*log(100-70)]= power is required to achieve the loudness of normal conversation in a noisy environment (assuming 70 decibels). It's small, it's very small, and it's more than enough for your phone to make the K701 loud. This is what it is usually said that if the level is high enough, the louder the level will be, and this is the basic principle of turning up the volume.

Simply understood as the same mobile phone turns on the maximum volume, plugs in the headphones, and the earphones that are easy to push are much louder than the headphones that are not easy to push.

But if the same earphone is placed on someone else's device, it will sound louder than your own portable device, that is, your mobile phone equipment is not good, that is, your own device is not good.

Headphones, also known as holding headphones or earpieces, are a pair of conversion units, which accept the telecommunication signals sent by the **** device or receiver, and use the speakers close to the ears to convert them into audible sound waves. Headphones are generally detachable from the **** device, and the wearing methods include in-ear, head-mounted, earbuds, etc., which are mostly used in mobile phones, walkmans, radios, portable games, etc., and are also used in computers and Hi-Fi audio.

Headphones are a symbol of people's portable audio. There are two standards for mobile phone headsets: the OMTP standard is usually called the national standard, and the CTIA is known as the international standard.

Headphones are classified according to their transducer methods, mainly including: dynamic mode, moving iron mode, electrostatic type and isomagnetic type. In terms of structure, it can be classified into semi-open and closed; In terms of wearing form, there are earbuds, ear pendants, in-ear and head-worn types; In terms of the number of wearers, there are single headphones and multi-person headphones; In terms of sound source, it can be divided into active headphones and passive headphones; Active headphones are also often referred to as plug-in headphones.

Direct push is to plug the earphones directly into the electronic device.

Earphone amplifier stands for Headphone Power Amplifier and is an additional electronic instrument.