CSR8675 Bluetooth 5.0 Adapter Two-in-One B20 Bluetooth Receiver Transmitter with apt-X HD and Dual Stream

This Bluetooth adapter solves the problem of connecting non-Bluetooth audio devices to wireless speakers or headphones. It supports both transmission (TX) and reception (RX) modes, making it versatile for home or professional audio setups. The built-in rechargeable 600mAh battery offers up to 18 hours in RX mode and 22 hours in TX mode for extended use. With support for high-resolution codecs including apt-X HD, apt-X LL, apt-X, AAC, and SBC, it delivers clear, low-latency audio.

Features and Construction

Built around the CSR8675 high-end chip, this adapter provides stable Bluetooth 5.0 connectivity with multiple audio interfaces and advanced codec support.

Material and Build

The adapter uses a CSR8675 chipset with 16Mb internal eFlash memory, expandable to 64Mb via external serial flash. It includes a 600mAh rechargeable battery with a charging time of about 3 hours. The housing is black plastic with SPDIF, I2S, and AUX input/output connectors, plus a Micro USB port for charging.

Size and Practical Fit

Exact dimensions are not specified, but the compact design fits easily alongside audio equipment such as amplifiers, soundbars, or car stereos. The 10-metre Bluetooth range (open space) allows flexible placement within a room.

Uses and Placement

The two-in-one TX/RX functionality makes this adapter suitable for a range of audio scenarios, from streaming music to enabling wireless headphones on older devices.

Event or Professional Use

In TX mode, the adapter can stream audio to two Bluetooth speakers simultaneously for larger spaces, with low-latency apt-X LL support for lip-sync accuracy in presentations or performances. The dual-stream feature is ideal for venues requiring distributed sound.

Everyday Home Use

In RX mode, connect two mobile phones simultaneously to share a single speaker, or add Bluetooth reception to a home stereo system via the AUX or SPDIF input. The long battery life means fewer interruptions for charging.

Benefits and Buying Value

This adapter offers practical advantages in connectivity, battery life, and audio quality without requiring complicated setup.

Reuse and Low Maintenance

The built-in 600mAh battery provides 18–22 hours of use per charge, reducing the need for constant recharging. The Micro USB charging is standard and compatible with most phone chargers. No drivers or apps are needed for connection.

Why Choose This Product

With support for high-codec formats like apt-X HD and dual-stream transmission, this adapter delivers high-quality audio with low latency. The separate left/right audio channel support and multiple input/output options make it flexible for various audio setups.