AirPods is too expensive? With iPhone, wired headphones become wireless in seconds!

Feiao has released a number of portable Bluetooth earphones in the past year or so, covering multiple price segments. In fact, this application demand is generated with many mobile phone brands canceling the 3.5mm earphone interface on popular new products. Feiao is a brand with a relatively complete product line in this market segment. This is not true. Feiao has recently further improved the product and launched the upgraded version of BTR1 BTR1K. What changes has it made? Let's take a look.

Basic parameters

Wireless Technology: Bluetooth 5.0

Bluetooth audio encoding: SBC, AAC, aptX, and aptX LL

Bluetooth Chip: Qualcomm QCC3005

DAC chip: AKM AK4376A

USB DAC: supports

Output power: ≥ 25mW(32 Ω/THD<1%)

≥ 45mW(16Ω/THD<1%)

SNR:(A weighting) 120dB

battery capacity: 205mAh

Duration: 8 hours

standby time: about 140 hours

charging time:<1.5 hours

USB interface: Type-C

Other functions: NFC, wake-up voice assistant, microphone, independent pairing button, and independent volume button are supported.

Interface: 3.5mm single-ended interface

size: 24mm × 50mm × 11.6mm

Weight: 20.5g

reference price: 298 yuan

advantages: the core chip upgrade, bringing many functional changes, the price remains unchanged.

Disadvantages: No obvious deficiency

BTR1K is to change the "core"-Bluetooth chip is upgraded from the previous CSRA64215 to Qualcomm QCC3005, and its improvement in all aspects is directly related to this upgrade. The technical specifications based on low power Bluetooth 5.0 enable BTR1K to support updated Bluetooth protocols in addition to better and faster data wireless transmission efficiency.

For users who pay attention to wireless audio, the wireless audio coding format it supports is naturally their concern. BTR1K provides support for AAC, SBC, aptX and aptX low latency. Although it does not provide support for higher quality audio coding such as aptX HD, LDAC and LHDC like BTR3, after all, there are different positioning considerations, but it should be enough for most buyers.

At the same time, the QCC3005 also gives Feiao more design space to optimize the algorithm. From the official data, it can be seen that compared with the previous generation of products, BTR1K achieves a minimum noise of <2uV and a signal-to-noise ratio of 120dB. At the same time, the output power is increased by 50%, which not only improves the audio performance, but also brings more space for the sound quality.

in the DAC part, BTR1K still uses a AK4376A independent DAC chip. Compared with AK4376 adopted by BTR1, there is an "A" at the end. Judging from the highest specification supported by decoding capability, there is no difference, which is 384kHz/32bit. Compared with the integration schemes often used in similar products, AK4376A have greatly improved their decoding capability, output function and signal-to-noise ratio.

in terms of appearance and craftsmanship, BTR1K continues the style of BTR1-square body, supplemented by large vertical stripes, large back clip design, the overall visual effect is simple and fashionable, and the body texture made of aluminum alloy is also good. There is still some difference. First of all, BTR1K has an additional multi-function button on the side of the body. In addition to playing/pausing in music playback and hanging up/answering during a call, BTR1K can also realize the function of quickly waking up the voice assistant of the mobile phone. The former type of operation is realized by short pressing, and the latter is double-click.

▲ BTR1K provides independent volume adjustment keys and multi-function keys, which are located on one side of the body and are convenient for users to use.

▲ The circular opening key on the front is convenient for blind operation.

I connect Xiaomi mobile phone and iPhone respectively, I can successfully wake up the voice assistant in their system. Since BTR1K also comes with an all-directional high-sensitivity microphone, it can be used directly to make calls or issue commands to the voice assistant. Qualcomm's 8th generation cVc noise reduction algorithm provides a solid guarantee for BTR1K's clear calls. The independent volume adjustment key on the same side of the multi-function key continues to be retained. With the function of the high-pass chip, it has 32 levels of volume adjustment, which is especially suitable for matching earplugs with high sensitivity. In addition, if the user connects the iOS device with BTR1K, the power of BTR1K will also be displayed on his Widget.

has also changed to the current mainstream and better-used USB Type-C interface. In addition to charging, users can also connect computers through it to realize USB DAC function. I tried it, and when it is turned on and not connected to other devices via Bluetooth, it can be switched to USB DAC mode by plugging it into the USB interface of the computer, without installing a driver, which is very convenient.

▲ The back clip is convenient for users to fix it on clothes, braces, etc.

has changed a little, and more importantly, the function has changed-from BTR1 standard red and blue two-color indicator light to RGB indicator light. It will display different colors according to different Bluetooth formats, so that users can clearly understand the current working mode, which is the same as BTR3.

▲ The attachment is very simple, one USB cable and one lanyard.

uses BTR1K to connect Xiaomi mobile phone 8 wirelessly via Bluetooth. Because both devices support NFC, it is very convenient to connect. In addition, if you only need to press the multi-function key briefly after disconnecting Bluetooth, BTR1K can realize one-key back connection with the device. I used Feiao's own FH1 headphones to match BTR1K for audition. Different from BTR3, which I tried not long ago and has a higher positioning, the sound style of BTR1K is more popular-the performance of intermediate frequency is more prominent, the low frequency is more elastic, and the high frequency is relatively restrained.

its sound is a little stained, it does not give people an excessively warm and thick sense of hearing, and its intensity is moderate. The mid-frequency vocal part will be relatively close to the ear, bringing the first feeling of grasping the ear. There will not be too many details of the sound, and the bottom of the sound is relatively clean. The elasticity of low frequency has been pushed out, the transient is clean and the sense of quantity is average, and it has a certain relationship with the earplug itself. High frequency is relatively restrained, but it is not dim, but it is slightly lacking in ductility.

BTR1K, which has been upgraded on the basis of BTR1, has brought a better and better "answer" to solve the problem of listening to music with wired earphones for mobile phones without 3.5mm earphone interface ". In addition to conventional usage, it can also be connected to a wired speaker to turn it into a "wireless speaker". It can also be connected to the car stereo, so that old cars that do not support Bluetooth can also obtain a wider range of music resources through mobile phones. For "core", but did not increase the price, BTR1K is worth considering.

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