---
product_id: 587927020
title: "Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer"
brand: "cubilux"
price: "€ 79.51"
currency: EUR
in_stock: false
reviews_count: 2
category: "Cubilux"
url: https://www.desertcart.hr/products/587927020-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to
store_origin: HR
region: Croatia
---

# Supports 5.1 Surround Sound 192KHz/24bit Hi-Res DAC USB-C to Optical SPDIF Output Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer

**Brand:** cubilux
**Price:** € 79.51
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your audio game—because your sound deserves the spotlight!

## Quick Answers

- **What is this?** Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer by cubilux
- **How much does it cost?** € 79.51 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/587927020-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to)

## Best For

- cubilux enthusiasts

## Why This Product

- Trusted cubilux brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **5.1 Surround Sound Ready:** Unlock immersive surround sound for your home theater setup—no 7.1, but pure 5.1 bliss.
- • **Plug & Play Optical Output:** Instantly convert USB-C audio to SPDIF without any software hassle.
- • **Universal USB-C Compatibility:** Works flawlessly with MacBook Pro/Air and Thunderbolt 3/4 devices for professional-grade audio.
- • **Compact & Sleek Metallic Design:** Minimalist form factor that fits perfectly into your modern workspace or entertainment center.
- • **Seamless Hi-Res Audio Transmission:** Experience crystal-clear 192KHz/24bit digital sound with zero compromise.

## Overview

The Cubilux USB C to SPDIF Transmitter is a unidirectional digital audio adapter that converts USB-C output from laptops and computers into high-fidelity optical audio signals. Supporting up to 192KHz/24bit resolution and 5.1 surround sound, it enables seamless connection to soundbars, home theaters, and amplifiers, delivering crisp, immersive audio with plug-and-play simplicity.

## Description

Cubilux USB C (Thunderbolt 4/3 compatible) to TOSLINK (S/PDIF) Optical Audio Converter transmits the digital audio signal from the laptop to home theatres, home stereo system, soundbar or surround sound speakers, AV amplifier/receiver, audio mixer, etc.

Review: Working. - Working properly with 5.1 system connected to Mac mini M4 pro.
Review: Works but overpriced - Works as advertised. But overpriced for what it does

## Features

- [Convert USB Port to SPDIF Transmitter] – Cubilux S/PDIF Output Adapter lets you transmit the optical audio signal from the USB Type C port of computers to soundbars, home audio system, external DAC or amplifier to enjoy 5.1 surround sound.
- [For Output ONLY] – This converter cannot be used in the opposite direction, not for receiving SPDIF signals from source devices like DACs/AMPs, not for recording audio.
- [Support 5.1 & Stereo Audio, NOT for 7.1] – This adapter can output stereo optical signal without any setup or software, and with a media player to decode 5.1 files and proper setting, it can output 5.1 surround sound, but this adapter does NOT support 7.1 surround sound due to the limitation of the USB port.
- [NOT for Partial-Featured USB Port] – This adapter is designed for computers and is not compatible with devices that devices with only partial-featured USB ports, such as TVs, Car USB ports, speakers’ USB ports, etc.
- [Crystal Clean Hi-Res Sound] – The USB Type C to TOSLINK Connector delivers crisp and clear sound from 48 KHz/24-bit to 192 KHz/24-bit with great clarity and rich audio details.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09QFYNB7Y |
| Best Sellers Rank | #235,239 in Electronics ( See Top 100 in Electronics ) #479 in Audio & Video Adapters |
| Brand | Cubilux |
| Brand Name | Cubilux |
| Colour | black |
| Compatible Devices | USB-C or Thunderbolt 4/3 compatible devices |
| Connector Type | USB Type C |
| Current Rating | 3 Amps |
| Customer Reviews | 4.3 out of 5 stars 823 Reviews |
| Input Voltage | 240 Volts |
| Item Dimensions | 22.9 x 2 x 1.5 Centimeters |
| Item Package Quantity | 1 |
| Item dimensions L x W x H | 22.9 x 2 x 1.5 Centimeters |
| Manufacturer | Cubilux |
| Model Number | CUB-USBOPT |
| Nominal Power | 0.4 Watts |
| Number of Items | 1 |
| Number of Ports | 2 |
| Power Plug Type | No Plug |
| Product Finish Type | Metallic |
| Specific Uses For Product | Computers, Amplifiers |
| Unit Count | 1.0 Count |

## Product Details

- **Colour:** black
- **Compatible Devices:** USB-C or Thunderbolt 4/3 compatible devices
- **Connector Type:** USB Type C
- **Item dimensions L x W x H:** 22.9 x 2 x 1.5 Centimeters
- **Specific Uses For Product:** Computers, Amplifiers

## Images

![Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer - Image 1](https://m.media-amazon.com/images/I/51nQz7+58LL.jpg)
![Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer - Image 2](https://m.media-amazon.com/images/I/81PpcAUzDkL.jpg)
![Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer - Image 3](https://m.media-amazon.com/images/I/71kgkt70mAL.jpg)
![Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer - Image 4](https://m.media-amazon.com/images/I/81JPMWiuDNL.jpg)
![Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer - Image 5](https://m.media-amazon.com/images/I/611K2Mg60QL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Working.
*by T***D on 13 December 2025*

Working properly with 5.1 system connected to Mac mini M4 pro.

### ⭐⭐⭐⭐ Works but overpriced
*by S***S on 5 August 2025*

Works as advertised. But overpriced for what it does

## Frequently Bought Together

- Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer
- KabelDirekt Optical Audio Cable – 10ft Digital Optical Cable for soundbars, Fiber Optic Lead (Digital S/PDIF Cable, Stereo Systems/amplifiers/amps, Home Cinema, Xbox One/PS4)
- Cubilux USB A to TOSLINK Optical Audio Adapter, Unidirectional USB Type A to SPDIF Digital Converter, S/PDIF Transmitter for Computer Laptop PC ONLY, NOT for TV Or Other Devices

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**Shop now:** [https://www.desertcart.hr/products/587927020-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to](https://www.desertcart.hr/products/587927020-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-15*