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Small metal box with coaxial and optical ports, switch button, USB power cable and 2m Toslink cable included

RCA PST148 Bidirectional Coaxial Optical Converter 192kHz 24bit audio adapter

SKU CH-VGQM-H4EWS

Converts coaxial and optical digital audio bidirectionally with 192 kHz 24-bit support and includes a 2 m Toslink cable

  • TypeBidirectional Digital Audio Converter
  • SpecificationsBidirectional Digital Audio Converter, 49 L x 48 W x 0.1 H m
  • Connector BBidirectional Digital Audio Converter
  • Terminal Gender1 x Bi-directional Coaxial to Optical Converter, 1 x 2m SPDI
  • Cable Jakcet TypeMetal
  • Connector StyleMale
  • Bidirectional conversion between coaxial and optical with a simple switch
  • Supports LPCM2.0, DTS and Dolby AC3 up to 192 KHz 24-bit sampling
  • Alloy shell reduces noise and resists heat up to 40 degrees Celsius
  • Includes 2-metre optical cable for loss below 0.2 dB per metre up to 30 metres
  • Works with PS4, Xbox 360, Apple TV, Blu-ray players, sound bars and amplifiers

What it is and who it serves

The RCA PST148 is a bidirectional digital audio converter that translates signals between coaxial SPDIF and optical Toslink formats. It supports LPCM 2.0, DTS and Dolby AC3 up to 24-bit 192 kHz sampling rates. A selector switch chooses the input direction, and a 2-metre optical cable ships in the box. The unit is aimed at home-theatre owners who need to connect legacy gear with mismatched digital ports.

How it fits a system

The converter sits between a source such as a Blu-ray player, console or satellite receiver and a soundbar, amplifier or UHD TV. It accepts either coaxial or optical input and outputs both simultaneously, so one source can feed two zones. Optical fibre runs up to 30 metres with less than 0.2 dB per metre loss; coaxial runs up to 10 metres. Power comes from the included USB cable, so no separate mains adapter is required.

What it replaces and when to upgrade

This adapter replaces a simple passive gender changer or a single-direction optical-to-coaxial dongle that cannot handle multichannel formats. The jump is worth it when you must pass 5.1-channel DTS or Dolby AC3 bidirectionally and need the 192 kHz headroom for high-resolution stereo streams. It does not support DTS-HD or Dolby TrueHD, so buyers who want lossless high-bitrate formats will need a different solution.

Highlights

  • Bidirectional conversion between coaxial and optical with a simple switch
  • Supports LPCM2.0, DTS and Dolby AC3 up to 192 KHz 24-bit sampling
  • Alloy shell reduces noise and resists heat up to 40 degrees Celsius
  • Includes 2-metre optical cable for loss below 0.2 dB per metre up to 30 metres
  • Works with PS4, Xbox 360, Apple TV, Blu-ray players, sound bars and amplifiers

Specifications

BrandRCA
SeriesOptical Converter / PST148
ModelOptical Converter
Part NumberPST148
TypeBidirectional Digital Audio Converter
SpecificationsBidirectional Digital Audio Converter, 49 L x 48 W x 0.1 H millimeters, 6, 5 volts, Cable Mount, Metal, Optical Converter, PST148, 40 degrees_celsius
Connector BBidirectional Digital Audio Converter
Terminal Gender1 x Bi-directional Coaxial to Optical Converter, 1 x 2m SPDIF Optical Toslink Cable, 1 x User Manual, 1 x USB Cable / PST148 / Optical Converter
Cable Jakcet TypeMetal
Connector StyleMale
FeaturesBidirectional Digital Audio Converter
Dimensions14.33in W x 12.83in H x 9.06in D
Package Quantity1
Package Contents1 x Bi-directional Coaxial to Optical Converter, 1 x 2m SPDIF Optical Toslink Cable, 1 x User Manual, 1 x USB Cable
Disclaimernot_applicable

Questions about this item

What is the maximum sampling rate this converter supports under sustained use?

It supports up to 192 kHz at 24-bit resolution for lossless digital audio conversion.

How does the alloy shell manage heat and noise during all-day operation?

The high-quality alloy shell provides thermal resistance and noise reduction, while a power indicator shows the converter is working.

Which cables and power source must I already have to connect this converter?

A 2 m SPDIF optical Toslink cable and a USB cable are included; the unit requires a 5-volt USB power source to operate.

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