---
product_id: 408710372
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: "€ 45.53"
currency: EUR
in_stock: true
reviews_count: 13
category: "Cubilux"
url: https://www.desertcart.sk/products/408710372-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to
store_origin: SK
region: Slovakia
---

# 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:** € 45.53
**Availability:** ✅ In 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?** € 45.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/408710372-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

- • **Hi-Res Audio Mastery:** Experience crystal-clear sound up to 192KHz/24bit for audiophile-grade listening.
- • **Compact & Sleek Design:** Minimalist metallic finish fits perfectly with your MacBook Pro/Air or any modern workstation.
- • **5.1 Surround Sound Ready:** Unlock immersive 5.1 channel audio with compatible media players and setups—perfect for home theaters.
- • **Seamless USB-C to Optical:** Effortlessly convert your USB-C port into a high-fidelity SPDIF transmitter—plug and play, no drivers needed.
- • **Universal Computer Compatibility:** Designed specifically for USB-C/Thunderbolt 3 & 4 laptops and desktops—no partial USB ports allowed.

## Overview

The Cubilux USB C to SPDIF Transmitter is a unidirectional adapter that converts USB-C ports on laptops and computers into optical audio outputs. Supporting up to 192KHz/24bit high-resolution audio and 5.1 surround sound, it delivers pristine digital audio to soundbars, amplifiers, and DACs. Designed for professional-grade setups, it ensures seamless plug-and-play compatibility with MacBook Pro/Air and other USB-C/Thunderbolt devices, making it the essential upgrade for audiophiles and media professionals seeking superior sound clarity.

## Description

Buy Cubilux USB C to SPDIF Transmitter, Unidirectional Type C to Optical Audio Output Adapter with 192KHz/24bit DAC for MacBook Pro/Air, Laptop, Computer: Digital-Analog Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Can play Apple Music HiRes Lossless with AVR (or DAC) - You can’t stream hires lossless (today) so need a wired connection. AppleTV is limited to 48 kHz. My AVR has an internal DAC that supports 24b / 192 kHz but won’t accept via USB. Looked all around for solution because I knew it had to be simple. And it is but everyone only suggested external DAC. This dongle lets you connect directly from iPad or new iPhones using an optical cable. I tried both and works perfectly. Sound quality is noticeably better if you have other good components like amp and speakers. iPad makes nice music display too, just need to figure out way to control remotely.
Review: Works with Sonos Beam Gen 2 - I have only had it for a few days and will update if issues happen. Sound wasn't coming from my Beam Gen 2 when using this with the optical to HDMI adapter from my Windows PC, a SPDIF output was showing up in outputs but no sound was coming out, even when plugged into a MBP. I assumed the cable was bad and was going to return it. Before doing that I messed around in the Sonos app for a bit, factory resetting the Beam a few times and re-adding it to the system. I even tried downgrading the Beam to S1, which didn't work and errored out. After re-moving, re-adding and going through the "Pair to TV" option in the app it just suddenly started working. So for anyone having issues getting sound to work with Sonos products, it might just be the app and not the adapter. EDIT: So it turns out it's setting the output to "TV" in sources.

## 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 | #15,715 in Electronics ( See Top 100 in Electronics ) #33 in Digital-Analog Converters |
| Brand | Cubilux |
| Color | black |
| Compatible Devices | USB-C or Thunderbolt 4/3 compatible devices |
| Connector Type | USB Type C |
| Current Rating | 0.08 Amps |
| Customer Reviews | 4.3 4.3 out of 5 stars (866) |
| Finish | Metallic |
| Input Voltage | 5 Volts |
| Item Dimensions | 9 x 0.8 x 0.6 inches |
| Manufacturer | Cubilux |
| Mfr Part Number | Z10-14BK |
| Model Number | CUB-USBOPT |
| Nominal Power | 0.4 Watts |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | Computers, Amplifiers |
| Unit Count | 1.0 Count |

## Product Details

- **Color:** black
- **Compatible Devices:** USB-C or Thunderbolt 4/3 compatible devices
- **Connector Type:** USB Type C
- **Item dimensions L x W x H:** 9 x 0.8 x 0.6 inches
- **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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Can play Apple Music HiRes Lossless with AVR (or DAC)
*by H***R on February 29, 2024*

You can’t stream hires lossless (today) so need a wired connection. AppleTV is limited to 48 kHz. My AVR has an internal DAC that supports 24b / 192 kHz but won’t accept via USB. Looked all around for solution because I knew it had to be simple. And it is but everyone only suggested external DAC. This dongle lets you connect directly from iPad or new iPhones using an optical cable. I tried both and works perfectly. Sound quality is noticeably better if you have other good components like amp and speakers. iPad makes nice music display too, just need to figure out way to control remotely.

### ⭐⭐⭐⭐⭐ Works with Sonos Beam Gen 2
*by S***N on November 5, 2024*

I have only had it for a few days and will update if issues happen. Sound wasn't coming from my Beam Gen 2 when using this with the optical to HDMI adapter from my Windows PC, a SPDIF output was showing up in outputs but no sound was coming out, even when plugged into a MBP. I assumed the cable was bad and was going to return it. Before doing that I messed around in the Sonos app for a bit, factory resetting the Beam a few times and re-adding it to the system. I even tried downgrading the Beam to S1, which didn't work and errored out. After re-moving, re-adding and going through the "Pair to TV" option in the app it just suddenly started working. So for anyone having issues getting sound to work with Sonos products, it might just be the app and not the adapter. EDIT: So it turns out it's setting the output to "TV" in sources.

### ⭐⭐⭐⭐⭐ The best way to send audio from one PC to antoher.
*by J***N on October 25, 2025*

If you want to send audio any other way, you're looking at introducing delay, from a network/wireless setup, or degrading audio quality from converting from digital > analog, then back from analog > digital, not to mention EMI. Keeping the signal all digital like this, and using a hard wired connection, is absolutely the best of both worlds. As long as your sample rate/bit depth is the same across devices, this is the only solution you should be looking at. I used it with a 15ft optical cable, and it transmitted just fine.

## 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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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-06*