The (also referred to as JieLi BR17 in some firmware versions) is a low-cost Bluetooth audio system-on-a-chip (SoC) manufactured by Zhuhai Jieli Technology . It is frequently found in budget-friendly consumer electronics like USB Bluetooth dongles, compact audio mixers, and wireless speakers. Understanding the JieLi BR21 "Driver"
: The BR21 driver provides an immersive listening experience with its ability to create a wide and deep soundstage. This means listeners can better perceive the spatial arrangement of sounds, adding to the realism and engagement of the audio. jieli br21 driver extra quality
I can confirm this works with Ubuntu 22.04. Using at terminal lsusb lists as: "ID 4c4a:4155 Jieli Technology USB Composite Device" Ask Ubuntu Jieli BR21 Bluetooth dongle shown as storage device JieLi BR21 The (also referred to as JieLi
For the end user, this translates directly to “quality.” The extended range (tested reliably up to 20 meters line-of-sight) means you can leave your phone on the kitchen counter while listening through garage speakers. The enhanced bandwidth allows the chip to handle with low latency, effectively supporting SBC and often AAC codecs without the stuttering or "chipmunking" common in inferior drivers. Sample Rate: 24-bit, 96000 Hz Buffer Size: 2ms