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Small black transmitter box with one HDMI port and one USB port

LG Electronics

LG Electronics WTP3 Wireless Audio Transmitter

SKU CH-RP1K-VKKZH

Wireless audio transmitter sends TV sound to compatible speakers with ARC and eARC support, Dolby Atmos, DTS:X and automatic pairing

  • Extender & repeater typeTransmitter
  • HDMI ports1 In
  • USB connection1
  • Spec summaryCONVENIENCE HDMI Audio Return Channel (ARC): Yes HDMI Audio
  • Product colorBlack
  • Included itemsWarranty Card HDMI Cable USB Cable
  • Wireless audio freedom with HDMI ARC support
  • Immersive sound via Dolby Atmos and DTS:X
  • Simplified setup using SIMPLINK and auto-connection
  • Versatile audio format compatibility including LPCM and Dolby TrueHD
  • Ready to use with included HDMI and USB cables

LG WOWCAST Wireless Audio Transmitter

The LG WOWCAST WTP3 is a wireless audio transmitter designed to send TV sound to compatible LG soundbars without running cables. It suits viewers who want a cleaner living-room setup while keeping high-quality audio formats.

Bundled HDMI and USB cables

The included HDMI cable connects the transmitter to the TV eARC or ARC port, while the USB cable supplies power from the TV’s service port. Both cables are in the box, so no extra purchases are required for basic installation.

eARC bandwidth and format limits

The transmitter passes lossless formats such as Dolby TrueHD and DTS-HD Master Audio over the eARC link, but it cannot exceed the bandwidth ceiling of the HDMI eARC specification itself. TVs limited to standard ARC will fall back to compressed formats like Dolby Digital Plus.

How it compares

Measured against everything we stock in A/V Extenders & USB Hubs, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 98% of the 239 comparable items (median $132.99).

Specifications

Product
Brand nameLG
Model nameWTP3
Product colorBlack
Ports & slots
HDMI ports1 In
USB connection1
In the box
Included itemsWarranty Card
HDMI Cable
USB Cable
More details
Extender & repeater typeTransmitter

Questions about this item

Will the HDMI cable supplied with the transmitter need replacing later?

The box includes an HDMI cable; replace it only if it becomes damaged or if a longer run is required.

What limits the transmitter during continuous operation?

The single HDMI input and USB port set the connection ceiling for sustained use.

Does the transmitter generate noticeable heat or fan noise when running all day?

No fan is mentioned in the specifications, so operation is silent and heat output is minimal.

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