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Black rectangular ABS box with LCD display, touch controls, volume knob, optical, 3.5mm and RCA ports, external antenna

Ainostone Bluetooth 5.3 Transmitter Receiver Bypass Adapter

SKU CH-85YD-ZF7EK

Bluetooth 5.3 adapter adds wireless audio to TVs or stereos, supports two headphones simultaneously, and includes a bypass mode for mixed wired and wireless listening

  • Connectorsfalse
  • Sold As1
  • Power Supplyfalse
  • ColorBlack
  • CabinetAcrylonitrile Butadiene Styrene (ABS)
  • Remote Controltouch
  • TX mode streams audio from TV or PC to two Bluetooth headphones simultaneously
  • RX mode adds Bluetooth input to a wired stereo from a phone
  • Bypass mode lets TV and headphones play together via optical, 3.5 mm or RCA cables
  • External antenna gives a stable link up to 45 ft indoors
  • Bluetooth 5.3 with on/off switch and volume control for both paired devices

3-in-1 Bluetooth 5.3 Audio Adapter

The Ainostone adapter adds Bluetooth 5.3 to non-Bluetooth sources such as a PC or TV in transmitter mode, receives streams on a wired stereo in receiver mode, and passes audio through untouched in bypass mode. It connects via 3.5 mm aux, optical or RCA and powers from a USB-C cable with no internal battery. A small LCD shows the active mode and connection status.

Simple Setup With One Common Pitfall

Plug the included USB-C cable into any 5 V source, choose TX, RX or bypass with the switch, then pair up to two headphones or speakers simultaneously. The external antenna gives a clear line-of-sight range of 45 ft. The only frequent issue is forgetting to match the mode to the cables; the manual notes that incorrect mode selection is the usual cause of no sound.

Good for Late-Night TV and Simple Streaming

Ideal for anyone who wants wireless headphones on an older TV or stereo without buying new gear, especially if two listeners need independent volume. Not suited for users who require aptX Low Latency or aptX HD codecs, need a built-in battery for portable use, or want to drive high-impedance headphones directly from the adapter.

Highlights

  • TX mode streams audio from TV or PC to two Bluetooth headphones simultaneously
  • RX mode adds Bluetooth input to a wired stereo from a phone
  • Bypass mode lets TV and headphones play together via optical, 3.5 mm or RCA cables
  • External antenna gives a stable link up to 45 ft indoors
  • Bluetooth 5.3 with on/off switch and volume control for both paired devices

Specifications

BrandAinostone
Connectorsfalse
Sold As1
Power Supplyfalse
ColorBlack
CabinetAcrylonitrile Butadiene Styrene (ABS)
Remote Controltouch
Featurestouch, false, 1 year Manufacture, 2AJ5B-BT97, Acrylonitrile Butadiene Styrene (ABS), All Black, Modern
Dimensions & Weight4.57 in x 1.53 in x 5.43 in

Questions about this item

How do I confirm the Ainostone adapter is transmitting audio correctly after connecting it to my TV?

Select TX mode on the switch, pair up to two Bluetooth headphones, play content and listen for sound; the LCD will show the active connection and the external antenna should give a stable link up to 45 ft with no obstacles.

Which cables and accessories come in the box and what must I provide separately?

The package includes the adapter, an optical audio cable, a 3.5 mm audio cable, a 3.5 mm to RCA cable and a USB-C power cable; you must supply a 5 V USB power source such as a wall charger or powered port.

When should I use TX, RX or Bypass mode on this 3-in-1 adapter?

Use TX to send audio from a non-Bluetooth TV or PC to Bluetooth headphones or speakers, RX to stream from a phone to a wired stereo, and Bypass to pass TV or PC audio through the adapter to both headphones and speakers simultaneously via optical or 3.5 mm connections.

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