in Feiao's earphone product line, the ring-iron hybrid series is the series with the largest number of existing product models, and the FD series "lineup" of pure moving coils is much smaller. The latest expansion of the series was FD5 released at the end of last year, plus FD1, which was originally positioned as an entry-level, which is only two products. However, with the recent simultaneous launch of two new FD series FD3 and FD3 Pro, consumers who prefer moving coil headphones have more choices.

Feiao FD3 product specifications

way of wearing: around ear into ear

Unit type: 12mm full-frequency moving coil

Frequency response range: 10Hz to 40kHz

Horn impedance: 32 Ω @ 1kHz

Headset sensitivity: 111dB @ 1mW

Maximum power: 100mW

Connection length: approximately 120cm

Single weight: about 7.0g

reference price: 699 yuan

compatible design

, let's briefly talk about the difference between FD3 and FD3 Pro. Their earphone bodies are the same, and the main difference lies in wires. FD3 comes standard with a 3.5mm single crystal copper wire, while FD3 Pro comes standard with an eight-strand 152-core single crystal copper silver plated wire, and has three replaceable plugs of 3.5mm single end, 2.5mm balance and 4.4mm balance. The latter, whether it is the quality of the earphone line or the playability of the replaceable plug, has greatly improved compared with FD3. How to choose the two depends on the needs of consumers.

The celluloid panel has a marble-like texture.

the prototype received by MC this time is FD3. After unpacking, it gave me the first impression that it was both strange and familiar. Strange is that its appearance has a different feeling from other earphone products of Feiao, while familiar is that the design elements of FD3 flash the shadow of two products of the same series. The cylindrical cavity of FD3 and the big brother FD5 of the same series have the same shape, and the front panel of the cavity uses a celluloid panel that also appears on FD1, with a marble-like texture. The combination of the two makes FD3 have its own unique visual effects.

▲ The cavity shape and FD5 have the same flavor.

celluloid panel makes its texture look more crystal clear, while a circle of golden decorative edges and golden FiiO Logo around the front panel further enrich the visual level. The main body of FD3 is made of aluminum-magnesium alloy. Through the combination of five-axis CNC machining and full manual polishing process, the cavity is as bright as a mirror, which is quite classy. In addition to the black prototype received this time, FD3 also has a silver color matching, but only the cavity changes from black to silver, and the color and pattern of the celluloid panel in front are the same.

▲ The interchangeable cable design of MMCX connector reserves space for users to upgrade headphone cable.

▲ The standard earphone wire adopts single crystal copper wire. 3.5mm single-ended joint.

FD3 maintains the fine tradition of replaceable wires for Feiao earphones. It adopts common MMCX interface. The earphone wire is 3.5mm four-strand single crystal copper wire, Bandung wire base and 120 core Litz structure. At the same time, the left blue and right red marks of earphone and earphone wire connector positions are also "routine operation". In the attachment, it provides an MMCX quick-release warping tool. With it, the "second-release" earphone line is completely realized, which well solves the problem that MMCX is too tight and is not easy to pull off.

In addition, in the accessories, FD3 is also equipped with HB1 waterproof storage box, plus 11 pairs of earplug covers of different sizes and types and cleaning brushes, and the "dowry" is still rich.

core technology decentralization, highlighting cost performance

although Feiao positions FD3 as an entry-level Hi-Fi headset, the price is only 699 yuan, but it has a lot of technology and design from FD5. First of all, FD3 adopts the same core design as FD5-external magnetic structure design, 12mm large diameter, up to 1.5T magnetic density of moving coil unit. Among them, the diaphragm material is made of a whole DLC diamond material, and its performance characteristics can effectively reduce the segmentation vibration of the horn diaphragm, reduce audio distortion, and improve high-frequency extension and resolution. With the design of high magnetic density magnetic circuit, FD3 performance in low frequency is also worth looking forward.

applied to FD5 and achieved good results, Feiao also set the flagship technology front cavity acoustic prism on FD3. This technology is to install an acoustic prism device in front of the diaphragm dome, so that the center and edge of the horn diaphragm can be synchronized to the sound mouth to obtain more accurate high-frequency junction images and smaller phase deviations. FD3 also applied Feiao's patented front and rear cavity balanced pressure relief technology to create a semi-open acoustic rear cavity. However, unlike FD5, the dense small holes on FD3 are located on the other side of the MMCX socket. The advantage of the semi-open acoustic back cavity is that it can balance the air pressure in the cavity, eliminate the pressure of the eardrum, and is not tired after listening for a long time.

Although the standard earphone cord of FD3 cannot be replaced with a plug, it still does not lack playability. The exchangeable acoustic catheter that exists on FD5 can be retained on FD3. And this time Feiao changed a design. The standard two acoustic conduits are no longer the obvious one large and one small on FD5. They have the same outer diameter and look similar. However, the red circle and black circle marks on the acoustic duct represent their differences. The inner diameter of the red circle is small and the inner diameter of the black circle is large. The principle is to use the high-frequency wavelength is short, and the principle of multiple refraction and wave elimination when passing through a long and narrow pipeline is used to attenuate the high frequency appropriately to present different hearing senses. The red-circle acoustic duct with small inner diameter pursues soft and audible high frequency, while the black-circle acoustic duct with large inner diameter emphasizes analytical force and highlights the penetration of high frequency. The replacement of the acoustic duct is also easy, removed or fixed to the headphone cavity by screwing.

audition experience

Although the cavity shape of FD3 is similar to that of FD5, its overall size is still one size smaller than that of the latter, and its weight is also much lighter. A single earphone is only about 7g, which makes its wearing experience very easy. After wearing FD3, users can feel its excellent passive noise reduction effect-most of the noise in the indoor air conditioner disappears when working, and the ambient low-frequency noise is also well isolated.

FD3 acoustic catheter deep into the ear canal, the earplug sleeve fits tightly, the ear canal has obvious filling feeling, and the pressure is moderate. However, the physical tightness is too good and brings noticeable ear pressure changes. It will be easier to switch from the default M earplug sleeve to S. When listening to music, the role of the semi-open acoustic back cavity is obviously brought into play, and the excellent advantages of passive noise reduction are retained. However, the ear pressure previously felt has become much smaller, the comfort is better, and it is no problem to listen for a long time.

audition, I used FD3 and M11 Plus LTD to compare the differences between the red and black acoustic ducts. In general, the styles presented by the two types of acoustic ducts are not much different. The special feature of the black acoustic duct is that it can show more sound details in the high-frequency part, and the brightness of the hearing should be added. But when listening to pop music, the dental sounds of some female voices are easier to perceive than the red-circle vocal duct. So I still use the default red circle sound tube for audition.

the first hearing of FD3, its voice has a "tense" feeling, which should be related to the characteristics of DLC diamond diaphragm it uses. After a period of burning the machine, the loose feeling of FD3 slowly came out. Its emphasis on sound performance is not like the common medium and low frequency trend on moving coil headphones, but slightly upward on the basis of maintaining a certain balance. Although the overall style of FD3 is still popular, Feiao is not reflected by tuning. The voice of FD3 has no obvious staining, and the hearing is positive, and it is more likely to show the reduction of the sound. At the same time, it does not have ultra-high resolution, and the sound details are moderate.

FD3 has a wide diffusion range, but it does not go down too deep. The sense of quantity is kept at a moderate level. When listening to some movie soundtracks, the low frequency is still in place to contrast the atmosphere, but if the low frequency in the background music needs to show strength, it may not appear to be cohesive enough and a little less powerful. To sum up, it is "more open", but "not deep enough". FD3 is relatively full for the shaping of the human voice, the position is slightly close to the ears, and the density is moderate. I prefer its presentation of male voices, which is more resistant to listening. Female voices are not bad, but a little less of my preferred "charm". In the high-frequency part, FD3 shows a good freshness, the sound is clean and smooth, there is no annoying burr, but sometimes it is a little dark. Therefore, if you are listening to high-frequency instrumental music or music, the user can change into a black-circle sound tube, and the brightness will be better.

FD3 is not a hard-to-push earphone. Although its standard earphone cable can only be plugged into a 3.5mm single port, it can get a good sense of listening with medium and low gain when listening to pop music. However, when listening to larger-scale music, I feel that the headset is not completely released under the low and medium gain. Switch to high gain, under which the sound field scale and high frequency permeability will be audible.

on FD3, you can feel the sincerity of Feiao-the large-diameter, high-magnetic density moving coil unit, acoustic prism, semi-open cavity and other technical architectures, and the design of interchangeable sound tubes, all allow users to experience the technology and design of higher-positioned products without spending too much budget, highlighting the outstanding cost performance of FD3. The overall style that emphasizes fashion is also in line with the mainstream preferences of the consumer groups targeted by a headset priced at 699 yuan. As the first step for users to enter the "initial burning", Feiao FD3 will be a good "stepping stone".

author:Microcomputer Official Microblog09-01 10:34

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