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Compact 3.5mm to SPDIF adapter with 1.2m optical cable

LiNKFOR ATD-03 3.5mm to SPDIF Audio Adapter with 1.2m Optical Cable

SKU CH-EVVC-ZAN3X

Converts 3.5mm audio to SPDIF optical digital output at 48K sampling with a 1.2m cable included

  • Second connector3.5 mm to SPDIF
  • Connector genderOptical Cable / ULK039 / ATD-03
  • Cable jacketABS
  • Units per package1
  • Product type3.5 mm to SPDIF
  • Details3.5 mm to SPDIF, 2, 5 V DC, ABS, ATD-03, ULK039, 55 degrees
  • Converts 3.5 mm analogue audio to digital SPDIF optical output
  • Supports uncompressed 2-channel PCM for high-fidelity sound
  • 48 kHz sampling rate delivers precise audio detail
  • Built-in 1.2 m optical cable for compact, portable connectivity
  • Plug-and-play setup works with TVs, soundbars, consoles and home theatre systems

3.5mm to SPDIF adapter

The LiNKFOR ATD-03 converts a 3.5mm analogue audio source into a Toslink optical digital signal for amplifiers or soundbars. It supports uncompressed 2 channel PCM output at a 48K sampling rate. The unit includes a built-in 1.2m optical cable and operates from a 5 volt DC supply. This adapter is not a digital-to-analogue converter.

2 channel PCM output

Under sustained use the converter maintains a steady 48K sampling rate without dropping frames or introducing compression artefacts. The uncompressed PCM stream preserves audio fidelity across long listening sessions. No driver installation is required, so the signal path remains stable on TVs, computers, projectors or gaming consoles. The device does not process multi-channel formats.

Thermal and power profile

The ABS enclosure stays within a 55 degree Celsius operating limit during normal playback. Power draw is limited to the 5 volt DC input, so the adapter adds negligible load to a USB port or wall wart. There are no moving parts, so the unit runs silently in a home theatre or office rack. The compact design does not block adjacent ports.

How it compares

Measured against everything we stock in Audio Jack & RCA Adapters, at today’s prices. Recalculated every night.

Price $26.99
Pricier than about 77% of the 1,324 comparable items (median $16.99).

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Specifications

Product
Brand nameLiNKFOR
Product lineATD-03 / ULK039
Model nameATD-03
Part numberULK039
Product type3.5 mm to SPDIF
Ports & slots
Second connector3.5 mm to SPDIF
Connector genderOptical Cable / ULK039 / ATD-03
Size & build
Cable jacketABS
In the box
Units per package1
In the boxOptical Cable

Questions about this item

Does the adapter generate noticeable heat when converting audio continuously for long sessions?

The unit is rated to operate up to 55 °C and draws power from a 5 V DC source, so it stays cool during extended use.

What source connection and power supply do I need to make the ATD-03 work?

You need a device with a 3.5 mm analogue output and a USB port or charger that can provide 5 V DC power for the converter.

Will the 48 kHz optical output work with my older soundbar that only accepts 48 kHz PCM?

Yes, the adapter outputs uncompressed 2-channel PCM at a 48 k sampling rate, matching the soundbar's supported format.

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