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Small rectangular Bluetooth 5.0 adapter with USB plug and TX/RX switch

Ruth's sister

Ruth's sister KN330 Bluetooth 5.0 international power cord

SKU CH-XVES-FVZ4T

Bluetooth 5.0 audio transmitter and receiver with USB power, 10 m range and TX/RX mode switching

  • Wireless audio up to 10 metres with Bluetooth 5.0
  • Switch between transmitter and receiver modes instantly
  • Compact 45 by 20 by 11 millimetre design fits anywhere
  • USB powered — no battery to recharge
  • Red and blue LEDs show active mode at a glance

Ideal for adding Bluetooth 5.0 to legacy audio gear

This compact adapter adds Bluetooth 5.0 to devices that lack it, working as a transmitter from a TV or as a receiver for powered speakers. It draws power from any USB port, so no separate charger is needed. The 10 m range covers typical living-room distances.

Not for aptX or AAC listeners

Buyers who want aptX or AAC codec support should look elsewhere because this unit does not support those formats. It also lacks a built-in battery, so it cannot operate away from a USB power source. Users needing multi-room or party-mode streaming will find this single-link device insufficient.

Bluetooth 5.0 with A2DP and AVRCP

The adapter uses Bluetooth 5.0 and supports A2DP plus AVRCP in receiver mode, deciding whether it fits your audio chain. A sliding switch selects TX or RX mode, shown by a red or blue LED. Dimensions are 45 mm by 20 mm by 11 mm.

How it compares

Measured against everything we stock in Worldwide Power Cords, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 60% of the 1,208 comparable items (median $9.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Which mode should I select — transmitter or receiver?

Slide the TX/RX switch to TX (red LED) to send audio from a TV or computer to Bluetooth headphones, or to RX (blue LED) to stream music from a phone to wired speakers.

What does the 10 m range mean when the adapter is plugged into a TV?

In open space you can keep paired headphones or a speaker up to 10 m away; walls or furniture will reduce the reliable distance.

How does the USB power interface limit where I can use the KN330?

The device draws 5 V from any USB port — TV, laptop, car charger or power bank — so it works wherever a USB socket is available.

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