The CA-6928 is a low-power Bluetooth audio transmitter module designed for embedding into audio systems. It supports Bluetooth 4.1 transmission from USB sound card input or analog line-in, enabling wireless audio streaming to Bluetooth headsets or speakers.

Specifications

• Model: CA-6928 (KCX_BT_EMITTER chipset)
• Bluetooth Version: 4.1 (transmitter only)
• Operating Voltage: 3.5 V–5 V DC
• Output Power: 15 mW stereo
• Audio Input:
  - USB sound card (digital audio)
  - Line-in (analog audio via 3.5 mm jack or header)
• Transmission Range: ~10–15 m (open space)
• Supported Profiles: A2DP (audio streaming)
• Audio Output: Wireless only (no onboard amplifier)
• Dimensions: ~24 mm × 15 mm × 1 mm
• Mounting: Solderable pads or embedded integration
• Power Indicator: LED status
• Packaging: Bare module (no enclosure)

Features

• Transmits audio wirelessly from PCs, TVs, MP3 players, and game consoles
• Supports USB sound card input and analog line-in
• Compatible with Bluetooth speakers, headsets, and receivers
• Ultra-low power consumption and compact footprint
• Ideal for DIY wireless audio upgrades and embedded audio systems
• Common use cases:
  - Wireless audio transmission from desktop or laptop
  - Bluetooth audio bridge for TVs and projectors
  - DIY Bluetooth audio adapters for legacy devices
  - Embedded audio streaming in custom electronics