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Small square Bluetooth audio adapter with 3.5mm jack and mode switch

Ruth's sister

Ruth's sister KN319 Bluetooth audio adapter 3.5mm

SKU CH-PKR9-ME4VR

A portable wireless audio adapter that switches between transmitter and receiver modes using a 3.5 mm connection

  • Wireless audio streaming for non-Bluetooth devices via transmitter mode
  • Streams from phone or tablet to wired speakers in receiver mode
  • Simple switch toggles between transmitter and receiver functions
  • Compact 44 × 44 × 12 mm design weighs only 18 g
  • Up to 10 m range and 6 hours receive time per charge

Compact Bluetooth audio adapter

The Ruth's sister KN319 is a portable wireless transmitter and receiver that adds Bluetooth connectivity to non-Bluetooth audio sources or wired speakers. It fits home stereos, TVs, headphones and car systems through a standard 3.5 mm connection.

Switchable modes with 3.5 mm cable

A physical slider selects transmitter or receiver mode, letting the same unit stream audio from a TV to Bluetooth headphones or from a phone to wired speakers. The included 3.5 mm cable and 44 × 44 × 12 mm body keep cabling simple and placement flexible.

Upgrades wired-only gear without new hardware

The adapter replaces long analogue cables for listeners who want wireless freedom on existing equipment. The jump is worth it when you need up to 10 m range and 5 to 6 hours of battery life between charges.

How it compares

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

Price $7.99
Cheaper than about 80% 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

Does the 3.5 mm interface limit the KN319 to analog stereo output?

Yes, the 3.5 mm jack and included cable carry analog stereo only; no digital or multi-channel formats are supported.

What clearance does the 44 × 44 × 12 mm body need behind a TV or stereo?

At least 12 mm depth plus room for the 3.5 mm plug and cable bend radius so the adapter sits flush without stress on the port.

How do you switch the KN319 between transmitter and receiver modes, and what step is often missed?

Slide the physical TX/RX switch to the desired mode, then hold the multifunction button to enter pairing; skipping the long press leaves the unit undiscoverable.

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