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Small square Bluetooth 5.0 adapter with matte finish, 3.5 mm and RCA ports, USB charging, slide switch for TX or RX mode

Golden Blue

Golden Blue KN321Technologies Bluetooth 5.0 Audio Transmitter Receiver

SKU CH-G5JF-NHMB9 MPN KN321Technologies

A portable Bluetooth 5.0 adapter that wirelessly streams audio between phones, TVs, PCs and speakers in both transmitter and receiver modes with a 10 m range

  • TypeUSB Wi-FI Adapter
  • Bluetooth 5.0 gives stable streaming up to 10 m
  • Switch modes instantly with a single slide switch
  • Built-in 200 mAh battery runs six hours in receiver mode
  • Includes 3.5 mm and 3.5 mm-to-RCA cables for wide compatibility
  • Weighs only 18 g and measures 44 × 44 × 12 mm

Versatile Bluetooth 5.0 Adapter

The Golden Blue KN321Technologies is a compact wireless audio transmitter and receiver. It adds Bluetooth 5.0 connectivity to non-Bluetooth TVs, stereos or CD players in transmitter mode. In receiver mode it streams audio from phones or computers to wired speakers or headphones. A simple switch toggles between the two roles.

Portable Build With 3.5 mm And RCA Connections

The unit measures 44 by 44 by 12 mm and weighs 18 g, making it easy to carry in a bag or pocket. A built-in 200 mAh Li-Polymer battery charges in 2 hours and delivers 6 hours in receiver mode or 5 hours in transmitter mode. Included 3.5 mm and 3.5 mm to 2RCA cables provide flexible analogue connectivity for home and car systems.

Check Your Source And Sink Devices Before Buying

Verify that your TV, stereo or CD player has a 3.5 mm or RCA output for transmitter use. Confirm your headphones or speakers accept a 3.5 mm or RCA input for receiver use. The adapter operates up to 10 m or 33 ft without obstructions. It supports A2DP and AVRCP profiles in receiver mode only.

Highlights

  • Bluetooth 5.0 gives stable streaming up to 10 m
  • Switch modes instantly with a single slide switch
  • Built-in 200 mAh battery runs six hours in receiver mode
  • Includes 3.5 mm and 3.5 mm-to-RCA cables for wide compatibility
  • Weighs only 18 g and measures 44 × 44 × 12 mm

Specifications

TypeUSB Wi-FI Adapter

Questions about this item

What Bluetooth version does the KN321 use, and what profiles are supported in receiver mode?

The KN321 uses Bluetooth 5.0 and supports A2DP and AVRCP profiles in receiver mode only.

Which audio cables and connectors are included for wired connections?

A 3.5 mm audio cable and a 3.5 mm to 2RCA cable are included for connecting to wired stereos, speakers, or headphones.

How do I switch between transmitter and receiver modes, and what is the common mistake?

Slide the physical switch on the device; the common mistake is forgetting to toggle it to the desired mode before pairing.

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