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Small black HDMI-to-optical converter box with short attached cables

Unstincer UN-003-US HDMI ARC to Optical Audio Video Converter 41in 192kHz 24bit

SKU CH-93K8-55BSP

Converts HDMI ARC TV audio to optical SPDIF for soundbars with 24-bit/192kHz sampling over a 41-inch integrated cable

  • Adapter typeARC to Optical
  • Cable length41 in (104 cm)
  • Thunderbolt 3 supportHDMI
  • First connector1x HDMI 19pin female
  • SoundHDMI
  • Connector finishPlastic
  • Connect TV audio to soundbar via 41in optical cable
  • Plug-and-play setup requires no extra converters or cables
  • 192kHz 24-bit sampling delivers clear digital sound quality
  • Supports PCM Dolby 5.1 and DTS 5.1 audio formats
  • Compact 2.4 x 3.96 x 1.3in design weighs 1.7 ounces

HDMI ARC to Optical Converter

The Unstincer UN-003-US extracts audio from a TV's ARC-enabled HDMI port and delivers it through an integrated optical SPDIF cable. It is built for owners of soundbars or AV receivers that lack an HDMI ARC input but accept digital optical signals. The 41-inch cable spans typical rack distances without extra leads.

Upgrade from analog or basic digital links

This converter replaces a direct analog RCA connection or a simple HDMI pass-through that cannot isolate audio. The jump is worthwhile when the television only outputs sound via ARC and the audio system requires a Toslink feed. It also removes the need for a separate HDMI audio extractor box and its own power supply.

192 kHz 24-bit headroom

The device handles PCM stereo plus Dolby 5.1 and DTS 5.1 bitstreams at up to 192 kHz 24-bit sampling. It runs out when the source sends uncompressed multichannel PCM beyond two channels or when the display lacks an ARC-labelled HDMI port. USB power must be supplied from the TV or a charger for operation.

How it compares

Measured against everything we stock in Video Signal Converters, at today’s prices. Recalculated every night.

Price $31.99
Pricier than about 75% of the 1,459 comparable items (median $17.99).

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Specifications

Product
Brand nameUnstincer
Product lineUnstincer
Model nameUnstincer
Part numberUN-003-US
Product typeHDMI Converters
Adapter typeARC to Optical
Audio & video
SoundHDMI
Ports & slots
Thunderbolt 3 supportHDMI
First connector1x HDMI 19pin female
Size & build
Cable length41 in (104 cm)
Connector finishPlastic
Cable jacketPlastic
Product dimensions2.4 in × 3.96 in × 1.3 in
Product weight1.7 oz
In the box
Units per package1
In the box1 x ARC to Optical

Questions about this item

How long is the attached optical cable on this converter?

The built-in optical cable measures 41 inches (1.05 m) from the HDMI plug to the SPDIF tip.

Which TV port must I use and what setting is required for audio to pass through?

Plug the HDMI end into the TV's ARC-labelled HDMI port, then set the TV audio output to ARC and choose PCM, Dolby 5.1 or DTS 5.1 in the sound menu.

Does the USB power lead need a separate charger or can it run from the TV?

The USB cable can be plugged into a TV USB port or any 5 V USB charger; the converter draws power from that connection.

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