Noise reduction should also be lightly loaded with the Bose QuickComfort 20i earphone experience.

Bose's headphones have always had a lot of experience in the field of noise reduction. The Bose noise-reducing headphones that I once experienced on the Hong Kong Huilou are also the first noise-reduction products I have come into contact with. The new Bose QuickComfort 20i released not long ago is the first product of their noise reduction earphone series. It supports the line control operation of iOS devices. At present, the noise reduction earphone market is mostly dominated by headphones, after all, the volume can accommodate more complicated. The noise reduction circuit, Bose has become a good thing in this field, and the noise reduction earplugs are easy to carry, and more suitable for the requirements of light street. In terms of Bose QC20i, no matter the technical terms or high prices, it reflects Bose's high-end style.

As the Bose's first in-ear noise canceling earphone, the Bose QC20i is obviously lighter than those of the past. The noise reduction module is designed on the wire not far from the audio jack, and the weight is unexpectedly light and will not be right. The wire creates a traction effect that doesn't feel too heavy in your pocket or backpack.

Also more striking is the cavity of the QC20i, so don't be scared by the odd-shaped earmuffs. This is the earmuff that Bose calls a special shark fin silicone. At first glance, its shape is a bit odd, and the double-layer silicone sleeve and raised retainer also have a few shades of shark fins. Maybe you will wonder how the earplugs should be worn, but it turns out that all manufacturers are not fools. It is impossible to make a headset that is paired with the ear. As long as the earplugs are naturally put on, the shark fin shape fixer will be stuck. On the auricle, it effectively prevents the earplugs from falling off. At the same time, the pair of earmuffs also have the effect of passive noise reduction, and the sound insulation effect is very good. Bose also comes with an S and L size earmuffs to choose from.

In addition to the usual volume +- and play/pause buttons, the Bose QC20i is equipped with a button on the side to open the Aware Mode mode at any time. This function is to help you hear the surrounding noise when the noise reduction is on. Dialogue sound can be understood as "temporary invalidation of noise reduction", but it does not turn off noise reduction. This feature is undoubtedly very useful for users who want to quickly get out of noise reduction and get around information, but it can't automatically turn off music playback, more or less insufficiency.

The Bose QC20i's lithium battery is integrated into the noise reduction module. It officially claims to support up to 16 hours of noise reduction playback when fully charged. It only takes 2 hours to fully charge, and when the battery is low for three hours, the battery The green indicator light will flash. It's hard to imagine that such a lightweight noise reduction module can provide such ample battery life. We turned on the noise reduction and played the music for 12 hours or so. The indicator light finally started to flash. The Bose QC20i has excellent endurance and is suitable for long-term business trips. Business people flying by plane. When charging is required, the micro USB interface on the noise reduction module is very versatile. Just take a mobile phone charging cable to charge the QC20i, and the noise reduction function can also be turned on during charging.

Even if you don't use noise reduction, the Bose QC20i can of course play music without power. Its earphone structure is still simple, and most of its functions are centralized on the line control and noise reduction module. From the point of view of ease of use, the use of QC20i can be no different from ordinary earplugs. Because there is no heavy battery box, the noise reduction module becomes extremely thin and light. You can't even feel the speciality of this product from the appearance and weight. Of course, Bose's masterpiece is of course still noise-reducing.

Bose's noise reduction effect has always been famous, and the most common application of noise reduction is on the plane. This is because the engine sound of the aircraft has a fixed frequency, and the principle of noise reduction is to analyze the noise of this fixed frequency and launch. The reverse sound wave is offset to achieve the purpose of eliminating noise. Therefore, most of the noise canceling headphones have no special effect on the sudden noise. In order to actually experience the active noise reduction effect of the Bose QC20i, we tested the QC20i in three scenarios.

When walking on the street, the sound of the car whistle and the people on both sides of the road is still audible, but the low-frequency noise similar to the car engine is more obvious. This is not too harsh, no matter how high-end noise-cancelling headphones. It is impossible to remove noise by 100%. After all, in terms of algorithm, the sudden noise is fleeting, and the frequency of fluctuation is not conducive to effective elimination. It is better to keep some whistle alarms on the road to prevent it from being heard. An external sound has an accident.

Bose QC20i's swell feeling is still within the acceptable range. The surrounding background sound after noise reduction is not very far away, but it is like a soft whisper. Even if it is sitting in the front half of the computer, the volume of music played by the speaker everyday is also Nothing affects the music in the earbuds. The QC20i's noise reduction is more difficult for high-frequency noise such as household vacuum cleaners, and still retains a sharp background sound. It can be said that the noise reduction effect of Bose QC20i inherits the consistent level of Bose, and the noise elimination efficiency is higher. Instead of other brands, it seems that the sound is far away, but it has not disappeared. The QC20i can eliminate most of the noise. Maintaining a more comfortable wearing feel is definitely worthy of recognition.

However, the current sound that is generated when the noise reduction is switched is unpleasant, especially when the noise reduction is turned off, the popping sound from the earplug is unacceptable. Perhaps this is a defect of the noise reduction circuit itself, but it has not found such a serious situation on other noise canceling headphones, you can choose to endure, you can also choose to take off the headphones when switching the noise reduction switch.

Unlike previous generations of Bose noise canceling headphones, this time the QC20i supports direct playback without power. It doesn't sound like a big deal, it's a normal thing. Only the sound quality of QC20i is somewhat disappointing under the noise reduction. It is not like Bose's standard. The overall sound is weak and weak. I thought it was a non-iOS device at first, but after changing to iPhone 5, there is no improvement in sound quality except bass. With good elasticity, the distortion of the sound is very obvious, rough and sharp, and you need to turn up the volume to get a satisfactory sound pressure. If you want to describe it, it is like the sound when the earplug is not fully inserted.

When the noise reduction is turned on, the sound becomes normal, and the sound field is immediately widened to obtain a full sound. The Bose QC20i is a moderately timbre tone, very balanced on the tri-band, but with sufficient amount of information in each band. Bose specifically mentioned that the Triport acoustic structure used in the QC20i can make full use of the vents on the cavity to get a full-fledged low-frequency effect. The QX20i has a low volume, and the texture is indeed elastic, but the dive is not deep enough to still float on the surface. This may also be related to turning on the noise reduction mode.

The IF feel is a part of the more serious impact of noise reduction. The vocals are not very prominent and the infective power is not enough. It does not radiate well in the sound field. The opening of the noise reduction makes the sound boring and the listening sense is somewhat crowded. This will affect the performance of pop music. The high frequency of the QC20i is relatively transparent, but the overall lack of momentum, too thin, but still better than the soft sound before the noise reduction.

Overall, the Bose QC20i has a good resolution, but there will be a big problem in the image. It is not excluded that it is related to noise reduction, but after all, the driver unit of the earphone cannot provide a wide dynamic range, plus noise reduction. The sound quality of the QC20i is not outstanding, and the sound quality of the QC20i is not surprising. In general, noise reduction will affect the performance of the sound quality, but the QC20i's noise reduction is not only loss of sound quality before opening, but it is improved, I don't know what Bose did to the headphones.

We experienced Bose's consistently good noise reduction experience on the Bose QC20i. There is no other brand's sullen discomfort and the noise reduction effect is very good. This is definitely worthy of recognition. However, there is a bit of disappointment after the approval. The sound quality under the noise reduction is really sorry for Bose's signboard. In this case, no power playback seems to be of little value, but the Bose QC20i is still a portable noise reduction earphone, sound quality and Not the point. Just a Bose earphone with a functional color, the price of 2580 yuan is too high, and the price difference between the 2700 yuan of the headphone noise reducer is not big. QC20i's light body makes it easy to carry, and the target users are crowded out of the streets, and demanding people with high noise reduction quality, instead of wanting to buy a HiFi sound quality, noise reduction is just an additional function.