Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
After BTR5, which is located in the high-end market, is listed on the market, the performance boundaries of different types of Feiao products are becoming more and more blurred. For example, M5 is a powerful Bluetooth HiFi decoding earpiece and a powerful portable HD player. However, BTR5 is the leader of the same volume of products in terms of function and performance. Its powerful hardware configuration is also doomed to a relatively "expensive" price. Therefore, the market performance is not as good as that of previous products. After all, M5 can be purchased at the same price and then it will be rich. Therefore, Feiao began to update the portable Bluetooth earphones that are positioned in the mid-range market. Previously, there was an upgraded version of BTR1 BTR1K, and now there is a new upgraded version of BTR3 BTR3K.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
is an upgrade of BTR3, what are the improvements of BTR3K? Compared with BTR3, BTR3K uses two AK4377A decoding chips, each channel is independently decoded, avoiding mutual interference, and finally supports balanced output, which also makes BTR3K more expensive than BTR3 by 100 yuan. We all know that the decoding chip of BTR3 is a AK4376A. In terms of performance, the AK4377A advantage of single-to-single is weak, but the two are different. The overall performance of BTR3K is obviously improved.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
battery, the new BTR3K has increased the total capacity of 30mAh to 330mAh. However, due to the design of dual DAC, the power consumption must be slightly larger than that of BTR3, so the battery life is basically the same as that of BTR3, which can reach about 11 hours. In addition, there is the Bluetooth version. The previous generation adopted Bluetooth V4.2, while BTR3K adopted Bluetooth V5.0, which is also in line with the trend of the times.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
the appearance design of the two Bluetooth earphones is similar. BTR3K has separated the back clip and designed it into a split combination structure like BTR5. The back clip of BTR3 is integrated and connected to the host. Therefore, there will be a little difference in weight. The body weight of BTR3K is 23.5g without back clips, while the weight of BTR3 is 26g with back clips. Then there is the thickness of the fuselage, BTR3K is 11mm, while BTR3 is 10.4mm, the difference is very small.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
, however, it should be noted that the new BTR3K no longer has direct NFC function, which is still a little regrettable. Fortunately, BTR3K supports one-to-two Bluetooth connections and can be connected to two Bluetooth devices online at the same time. If there are two mobile phones, either one can play music. This design is still very humanized. In addition, due to the addition of dual DAC, under the 16 ohm output impedance, the output power BTR3K of the single-ended interface can reach 50mW, while the previous generation BTR3 can only reach 33mW.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
, whether BTR3K or BTR3, their Bluetooth chips are exactly the same, they are Qualcomm CSR8675.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
packaging is still the flavor we are familiar with. The outer layer of the brand-new product will also have plastic film. Feiao has done a good job in ensuring that consumers buy new machines that others have not tampered.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
BTR3K is still a USB Type-C interface, there is a Type-C charging cable in the accessory, a protective case with a back clip and a lanyard.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
host is a 2.5D glass panel, which has a certain three-dimensional visual effect. There is an LED lamp under the Logo, which can display a variety of colors, corresponding to different working states, as shown in the following figure:
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
double crystal oscillator design is also a major selling point of BTR3K. The two crystal oscillators of 22.5792MHz and 24.576MHz correspond to different sampling frequency signals respectively, reducing the generation of Jitter and accurately restoring sound.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
BTR3K has passed the Hi-Res Audio authentication. In Bluetooth format, it supports SBC, AAC, aptX, aptX-LL, aptX-HD and LDAC decoding. Audio signals are directly output to the decoding chip by IIS. Bluetooth configuration supports A2DP, AVRCP, HFP and HSP protocols, and can reverse control the playback/pause, up and down track jump or hands-free call functions on the player side.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
The physical keys are the same as those of BTR3. The operation is very simple. The small hole in this picture is the built-in microphone position, which is a full-pointing microphone, supports cVc call noise reduction technology, and the call is clear without noise.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
In fact, I especially like the screen design on BTR5. Although it is small and monochrome, it is especially practical and the information is clear at a glance. But the cost is indeed much higher than BTR3K.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
I have talked about the daily use of BTR3K products many times in previous evaluation articles. It can be connected to the wired speaker at home to make it a wireless Bluetooth speaker; it can be connected to the car entertainment system to solve the car's poor Bluetooth sound quality performance; it can also be connected to a laptop as an external HiFi sound card for use. Of course, you can also connect fever headphones, but this kind of thing would be better if it were handed over to Feiao LC-BT2.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
By comparison, it can be seen that the BTR3K body is not only small but also very thin, with a volume of only 58 × 25 × 11(mm) and a weight of only 23.5g.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
BTR3K has two audio output interfaces, a 2.5mm balance port and a 3.5mm single port. The total power during balanced output can reach 78mW, which is enough to push most balanced headphones on the market. A single port can reach 50mW of total output power under 16 ohm impedance. Judging from the driving force of the chip, AK4377A × 2 is 50% higher than the previous generation AK4376.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
, I talked about the sound quality. I also have BTR3 in my hand, so I made a comparison. When the same AAC Bluetooth format is used, the listening feeling of BTR3K single port is different from BTR3. Although it is single port, BTR3K is also decoded by two AK4377A. The voice of BTR3 is more enthusiastic and unrestrained. On the other hand, the voice of BTR3K is convergent, and the control performance is better. At the same time, the sound level is stronger and the sound bottom is cleaner. However, I think the sound density of BTR3K is not as large as that of BTR3. The sound of BTR3 is grainy and the sound line is more real, while the stereo separation performance of BTR3K is better.
the distance of BTR3 is shorter in human voice performance. Without BTR3K, it sounds far away. It is two different flavors. It is impossible to say which is better. But in terms of the degree of grounding, it is obvious that the voice of BTR3 is more popular.
Hardware Upgrade Dual AK4377A Decoding with Balanced Output, Feiao BTR3K vs. Old Model
in fact, BTR3K is really powerful in its balanced output, with sound quality at another level. Much better than a single port. With the balance line inserted into the balance port, there is a feeling of entering the provincial capital from the county seat. The sound bottom is extremely clean, the details are in place, the low frequency is more flexible, and the sound field is more magnificent. As such a small size and low power Bluetooth decoding earpiece, I don't think there is anything to be picky about, and what more bicycles.
if I have to find fault with BTR3K, I still think that not having a display screen is its only and biggest regret.
author: 03-26 21:56
website: https://weibo.com/ttarticle/p/show?id=2309404486846435427306
