The Focal Universal Wireless Receiver is designed for Bluetooth-compatible portable devices and is suitable for amplifiers and multimedia systems with analog RCA left and right channel input terminals for complete transmission and CD in Bluetooth limited bandwidth. The music quality is close to the format, providing a convenient, universal listening experience.
Perhaps you still have to, previously Focal has launched the Kleer technology for wireless transmission, but it is relatively closed, specifically for the audio group developed exclusive specifications, you have to buy a complete sound system to enjoy the convenience of wireless music. Now, for general users, Focal has introduced Bluetooth wireless transmission that also uses 2.4GHz frequency domain transmission. This is the ideal "universal" solution, visible from package printing, suitable for desktop computers, notebook computers, tablet computers, etc. (As long as there is a device equipped with Bluetooth).
Focal Universal Wireless Receiver Wireless Receiver
The back page is multilingual: the wireless receiver's greatest advantage is that it doesn't require any “senders†on the portable device to be compatible with all smartphones, or PC/Mac or laptops with Bluetooth.
Focal Universal Wireless Receiver Wireless Receiver
Focal Universal Wireless Receiver Wireless Receiver
Open the package visible: in addition to the manual, the universal receiver body, Switch Power with different plugs, and the RCA extension cable hidden underneath.
Focal Universal Wireless Receiver Wireless Receiver
This design is really handsome, it can be done directly on the "card", which is much simpler than the design of the adapter plug.
Focal Universal Wireless Receiver Wireless Receiver - Power Supply
The front of the power supply is also very powerful, it seems to be the vents?
Focal Universal Wireless Receiver Wireless Receiver - Power Supply
Since the original specification is based on the "Powerbird" 2.1-channel sound system and the "XS Book" active speaker, this time I used the Focal Bird sound system as a matching trial.
Focal Universal Wireless Receiver Wireless Receiver - Instruction Manual
First, install the AptX receiver to the RCA analog input terminal on the back of the backplane, and connect the power cable. At this time, the LED light will start to flash continuously. Then switch the Powerbird signal source to the analog stereo option, and then complete the hardware part of the cable preparation. Next is the Bluetooth connection menu for the portable device, and select “Focal Wireless Receiver†from the list of Bluetooth devices. After waiting for the connection to be completed, the receiver will make two “哔â€, and the original flashing LED light will be continuously lit, thus completing the Bluetooth connection between the portable device and the receiver, which is easy to use in use.
Frankly speaking, this silver-black color-matching Bluetooth receiver looks really like Focal's own Kleer wireless transmitter iTransmitter. AptX is a Bluetooth audio compression technology developed by CRS. It has signed an AptX audio codec technology license agreement with most mobile device manufacturers on the market. It is a good balance between versatility and sound quality. select.
Focal Universal Wireless Receiver Wireless Receiver
The front side is more compact and you can see the thin gold plating on the RCA terminal.
The side is the power jack, you can see that it is still a little thick, so the built-in Bluetooth decoder chip can fully dissipate heat.
Focal Universal Wireless Receiver Wireless Receiver - Power Jack
Look at the stereo RCA terminal from another angle. This receiver is very easy to use, just plug it directly into the RCA terminal of the backplane and plug in the power cord. Of course, if the width of the left and right terminals is too large, please use the RCA extension cord that comes with the original factory.
Focal Universal Wireless Receiver Wireless Receiver
The RCA terminals of the supplied extension cords are also gold plated. Focal's unusual "Bluetooth Transmission Architecture" is used. Under the Bluetooth specification, there are various decoding specifications, such as "SBC", which is commonly used in wireless voice calls. The frequency response range is only 20Hz-17kHz, there is still a big gap from the standard CD audio 20Hz-20KHz, naturally not good. The original factory used CSR's AptX technology on this universal wireless receiver. In addition to adopting the higher-order ADPCM coding principle, the entire 10Hz~22kHz frequency response is properly compressed into the bandwidth of the Bluetooth transmission standard. It also provides a dynamic regeneration range of up to 92dB. Whether the audio is stored in an uncompressed format on the portable device, or in a compressed format such as MP3, AAC or FLAC, AptX technology can transmit over Bluetooth, playing music as undistorted as possible.
Focal Universal Wireless Receiver Wireless Receiver - RCA Terminal
According to CSR, they use 384 kbps "lossless compression" ADPCM encoding on AptX, which is 4:1 compared to the original audio. From this data, the so-called "lossless compression" is actually like the MP3 format, which is truncated and then restored by the algorithm. From this figure, although it is quite high compared with the ordinary 128kbps and 256kbps, in the research data, such high sampling frequency, even compared with PCM audio, should be difficult to detect by human hearing, but theoretically There is still a slight loss in high-frequency overtones, which is why the original factory is conservatively called "close to CD audio format."
In addition to providing greater freedom of use for portable devices, audio processed via the apt-X encoding format has a compression ratio of 4:1 to the original audio file, while minimizing the quality of the replayed audio.
What is the actual performance? The gap is not as significant as the Kleer wireless transmission via the same plant. The sound of sirens and electric guitar solo at the beginning of "Guns & Roses" "Welcome to the Jungle" is a bloody spurt, playing rock music or pop music OK, and changing to the folk song type high-frequency clear and thorough, it is a high analytical orientation. The mid-low frequency performance is light and flat, and it is natural on the performance of the nylon string guitar. The playing voice has a faint sweet taste, and does not specifically emphasize the lip-tooth sound. Then, with the selection of RR and Chesky's audition film "ARABESQUE by Crystal Cable", the songs were compiled. The 11th song "Sansang"'s "Dance Macabre" is very dynamic and the sound is also very attractive. There is considerable separation between the instruments. The sense of depth is not obvious, but the ability to spread is stronger than the ability to locate, but most of the contours of the instrument can be reproduced.
With the original Bird 2.1 channel audio system, you can enjoy the high-quality performance similar to Kleer by directly controlling the volume through the remote control.
Original specification
â— Form: Universal wireless receiver â— Decoding: Transmission via Bluetooth specification, decoding by AptX CSR method â— Signal transmission effective range: straight line 10 meters (without obstruction)
â— Encoding format: "Adaptive Differential Pulse Code Modulation" and the original audio compression ratio of the lossless compression format is 4:1
â— Modulation frequency: 384 kbps transmitted via radio transmission
â— Audio sampling rate and resolution: 44.1kHz/16bit
â— Frequency response: 10Hz to 22kHz
â— Calculation delay: 1.89ms@Fs 48kHz
â— RF transmission power (sensitivity): 2.5mW (4dBm)
â— RF transmission frequency domain: 2.4GHz (Bandes ISM)
◠Body size: 60╳56╳14mm
â— Weight: 22g
â—Reference price: 5,000 yuan
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