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Rectangular black box with volume knob and optical, RCA, 3.5 mm ports

1Mii B03 Bluetooth 5.3 Transmitter Receiver aptX Adaptive Low Latency HD Optical RCA AUX Volume Control

SKU CH-YM6R-H5QB4

Bluetooth 5.3 transmitter and receiver streams TV audio to two headphones simultaneously or adds wireless streaming to a wired stereo with aptX Adaptive, HD and Low Latency codecs, optical.

  • Channels2
  • Power Supply5 volts
  • Remote Controlfalse
  • FeaturesaptX Adaptive/Low Latency/HD
  • Dimensions & Weight6.15 in x 3.15 in x 1.86 in
  • Bluetooth 5.3 streams TV audio to two headphones simultaneously
  • aptX Adaptive and HD deliver low-latency, high-fidelity sound
  • Transmitter and receiver modes add Bluetooth to any wired stereo
  • Optical, RCA and 3.5 mm connections fit most TVs and soundbars
  • Bypass mode plays headphones and wired soundbar together

Versatile Transmitter & Receiver

The 1Mii B03 adds Bluetooth 5.3 to a TV or stereo system. In transmitter mode it streams audio from a TV, DVD player or similar source to Bluetooth headphones or speakers. In receiver mode it lets a wired stereo play music from a phone, tablet or laptop. The adapter supports aptX Adaptive, aptX Low Latency and aptX HD codecs.

Range & Dual-Headphone Limits

Outdoors the unit reaches up to 230 ft (70 m) line-of-sight; indoors the practical range is 80110 ft (2535 m). Two headphones or speakers can be paired at once, but when both use aptX Low Latency the codec falls back to standard aptX. Optical, RCA and 3.5 mm connections provide digital and analogue paths.

Simple Setup & Common Issues

Power comes from a 5 V supply and the box measures 6.15 in x 3.15 in x 1.86 in. Switch between TX, RX and bypass modes with the hardware toggle, then pair devices using the front button. Volume is adjusted on the unit itself. No remote control is included, so all changes must be made at the device.

Highlights

  • Bluetooth 5.3 streams TV audio to two headphones simultaneously
  • aptX Adaptive and HD deliver low-latency, high-fidelity sound
  • Transmitter and receiver modes add Bluetooth to any wired stereo
  • Optical, RCA and 3.5 mm connections fit most TVs and soundbars
  • Bypass mode plays headphones and wired soundbar together

Specifications

Brand1Mii
ModelB03
Part NumberB03
Channels2
Power Supply5 volts
Remote Controlfalse
FeaturesaptX Adaptive/Low Latency/HD
Dimensions & Weight6.15 in x 3.15 in x 1.86 in

Questions about this item

Should I use transmitter mode or receiver mode for my setup?

Choose transmitter mode to send TV audio to Bluetooth headphones or speakers, and receiver mode to stream music from a phone or tablet to your wired stereo system.

What does the 230 ft range figure mean for indoor use?

The 230 ft (70 m) line-of-sight outdoor range translates to roughly 80–110 ft (25–35 m) indoors, so walls and furniture will reduce the practical distance.

How does Bluetooth 5.3 affect the aptX codecs I can use?

Bluetooth 5.3 provides the underlying link; the B03 then negotiates aptX Adaptive, aptX HD or aptX Low Latency, switching to standard aptX when two Low Latency headphones are paired simultaneously.

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