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Small square Bluetooth 5.0 adapter with 3.5 mm and RCA cables

JinTaoRui

JinTaoRui KN321Technologies Bluetooth 5.0 audio transmitter receiver

SKU CH-QN6R-EYYQ0 MPN KN321Technologies

Bluetooth 5.0 adapter transmits or receives stereo audio over 10 m with a 3.5 mm jack and 200 mAh battery lasting 5 to 6 hours

  • Product typeUSB Wi-FI Adapter
  • Bluetooth 5.0 gives stable wireless audio up to 10 m
  • Transmitter mode streams TV sound to Bluetooth headphones
  • Receiver mode plays phone audio through wired speakers
  • Switch modes instantly with a single slide switch
  • 200 mAh battery runs six hours in receiver mode

Wireless Audio Transmitter Receiver

The JinTaoRui KN321Technologies is a Bluetooth 5.0 adapter that switches between transmitter and receiver modes. In transmitter mode it sends audio from non-Bluetooth sources such as a TV or CD player to wireless headphones or speakers. In receiver mode it streams audio from a phone, tablet or computer to wired stereo systems or headphones using the included cables.

Check Your Setup Before Ordering

Verify that your source device has a 3.5 mm audio output or RCA inputs for the supplied cables. The adapter charges via USB and requires about two hours for a full charge. Operation range reaches up to 10 m or 33 ft without blocking objects, so ensure the intended placement stays within that distance.

Ideal For Portable Wireless Audio

Suits users who want a compact, battery-powered bridge between wired and Bluetooth audio gear at home or in a car. Not for buyers who need continuous mains-powered operation, aptX or other codec support beyond standard A2DP, or a device that handles microphone input for calls.

How it compares

Measured against everything we stock in Wi-Fi Cards & USB Adapters, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 68% of the 1,565 comparable items (median $18.99).

Specifications

Product
Product typeUSB Wi-FI Adapter

Questions about this item

What cables are included with the KN321Technologies and what must I provide?

The box includes a 3.5 mm audio cable and a 3.5 mm to 2RCA cable; you only need to supply a USB power source for charging the 200mAh battery.

Should I choose the transmitter or receiver mode for my setup?

Use transmitter mode to send audio from a non-Bluetooth TV or CD player to Bluetooth headphones; use receiver mode to stream from a phone or tablet to wired speakers or headphones.

What does the 10 metre range mean in a typical room?

The 10m / 33ft figure applies with no blocking objects; walls or furniture will reduce the reliable distance.

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