🔄🔊 Bi-Directional Optical Audio ↔ Digital Coax Converter

This converter enables two-way digital audio conversion between optical (TOSLINK) and digital coaxial (RCA-style) formats. It supports uncompressed stereo and compressed surround formats, making it ideal for home theater, studio, and AV integration.
 
🔧 Converter Format
Ports:
1x Optical (TOSLINK) Input/Output
1x Coaxial (RCA) Input/Output
Input selector switch (Optical ↔ Coaxial)
Power: USB or DC adapter (typically 5V)
Form Factor: Compact box or inline module
Audio Format Support:
LPCM 2.0 (uncompressed stereo)
Dolby Digital (AC3), DTS 5.1 (compressed surround)
Sampling Rate: Up to 192 kHz
 
🖥️ Compatible Devices
📺 TVs, Blu-ray players, and set-top boxes
🔊 AV receivers, soundbars, and DACs
💿 CD/DVD players with digital audio out
🎮 Game consoles with optical or coax output
🧪 Audio analyzers and test rigs
🧰 Studio gear with mismatched digital formats
 
✅ Common Uses
🔄 Convert optical output to coaxial input (e.g., TV → DAC)
🔁 Convert coaxial output to optical input (e.g., CD player → soundbar)
🧩 Integrate legacy gear with modern audio systems
🛠️ Route digital audio across format-specific devices
🧪 Test compatibility between S/PDIF formats
 
🧠 Signal Format Notes
Protocol: S/PDIF (Sony/Philips Digital Interface Format)
Transmission Type:
Optical: Light pulses via fiber
Coaxial: Electrical pulses via 75Ω cable
No Analog Conversion: Digital-to-digital only
No Video Support: Audio-only transmission
❗ Converter does not decode audio—passes signal as-is
 
⚠️ Things to Watch Out For
🔌 Requires external power—USB or wall adapter
🧯 Not bidirectional simultaneously—must select input side
📏 Cable quality affects signal integrity—use shielded coax and low-loss optical
🧪 Match audio format—some receivers may not support DTS or Dolby
🧼 Avoid stacking converters—can introduce jitter or sync issues
 
🛠️ Quick Tips for Beginners
🔍 Identify TOSLINK by its square port with a flap; coax by its orange RCA jack
🧭 Use input selector switch to choose conversion direction
🧰 Keep one in your AV toolkit for format bridging
🧪 Test with stereo LPCM first before trying surround formats
🧼 Store with dust caps—optical ports are sensitive to debris