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You who pursue HIFI know this gameplay?

You know that there is a kind of gameplay that allows the sound to maintain a clean, low-noise background over long cable runs. It also allows the headset to have higher resolution without changing the headphone unit and connecting the external amp. Does the player have better driving power? This type of gameplay, which was only used on professional recording equipment in the past, is gradually entering the eyes of ordinary users. More and more portable players have begun to be equipped with such designs. Did you guess it? Yes, what we want to say this time is the legendary "balanced audio interface." As for what is a "balanced interface," many friends may already have some understanding, but why does it have the above-mentioned magical effects? Isn't all "balanced interfaces" a "balanced interface"? Or is it better to be "balanced"? Lets talk about it today. beats by dre studio We first try to explain the principle of balanced lines in a simple mathematical way: In audio transmission, one signal is divided into two, and the phase of one signal is inverted by 180 degrees to obtain a positive signal (A ) and the inverted signal (-A), noise (B) may be added during the synchronous transmission so that the signals at both ends become (A+B) and (-A+B) when reaching the receiving end Then invert the inverted signal and combine it with the positive signal to get (A+B) and -(-A+B). When the two are combined, it becomes (A+B)-(- A+B)=(A+B)+(AB)=2A.

Because the longer the cable, the more interference the signal will have, so the above formula explains the "balanced interface" can make the sound in the long-distance cable transmission still maintain a clean low-noise basis. If you still don't understand it, then okay, please ignore it. Since the above said, "balanced" requires a signal to be divided into two, then the most basic configuration of the balanced interface is that one channel requires two independent cores for positive and negative signal transmission and ground. The common balanced interface is TRS three-core interface and XLR interface (contacts from three to seven). As mentioned above, the transmission of one channel in the balanced line must not only have a design that inverts the signal at the output end and the receiving end, but also requires independent positive, negative, and ground lines for each channel. Such two-channel playback as headphones and 2.0 speakers requires a six-wire interface. What is the "balanced interface" of today's beats by dre headsets and players directly through a TRRS quad interface? The cable distance of the earphone is generally Beats Headphones On Sale" href="/">Beats Headphones On Sale very close, the noise interference will not be very obvious, so it is not necessary to carry out the "full-balanced design" of the anti-phase transmission to eliminate the noise, but the two are connected through the concept of the four-pole "balanced interface". The positive and negative polarities of the channels still help to improve the separation of the left and right channels and also give the headset Cheap Beats Headphones better driving power. Because the traditional TRS three-conductor stereo interface combines the ground lines of the left and right channels, and the left and right channels of the balanced interface use the ground separation method, even if it is not the real balanced amplification, but balanced "It can indeed bring better resolution, wider sound field performance, and richer sound details to the sound. However, some users may also think that such voices are too subtle and lack some moisture, mellowness and sense of envelopment. This requires looking at different combinations and tastes. In fact, some headset brands have adopted the ground separation method in the headset design before the concept of balance is not popular, that is, from the headphone unit to the stereo plug, the positive and negative electrodes of the left and right channels are independent. The only way to fit the standard stereo player is to connect the negative electrode to the ground only at the plug. Doing so also effectively increases the separation of the channels. It is only now that the "balance" is more complete, and the effect is even more pronounced. For enthusiasts, let the player have a better drive, let the headset have better quality and resolution, clearer details, make the sound sound more abundant, more relaxed, and ultimately more advantages. At present, many players have consciously provided users with a four-pole stereo interface in addition to the common three-pole interface, and some headsets have begun to introduce products that use four-pole interfaces, allowing users to use the device. If you like the wider sound field and better resolution, and just have a player with a balanced output, then replacing your headphones with a suitable balance cable or changing to a balanced plug will give you plenty of freedom. Surprised Oh.