---
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: "€ 47.37"
currency: EUR
in_stock: true
reviews_count: 13
category: "Cubilux"
url: https://www.desertcart.fi/products/408710372-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to
store_origin: FI
region: Finland
---

# 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:** € 47.37
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your audio game with Cubilux — 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?** € 47.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/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

- • **5.1 Surround Sound Ready:** Unlock immersive surround sound from your MacBook or laptop with zero latency.
- • **Plug & Play Optical Output:** Instantly convert your USB-C port to SPDIF without any drivers or software hassle.
- • **Compact & Lightweight Design:** Ultra-slim form factor fits perfectly in your professional setup without clutter.
- • **Exclusive Computer Compatibility:** Optimized for full-featured USB-C ports on laptops and desktops—no compromises.
- • **Seamless Hi-Res Audio Transmission:** Experience crystal-clear sound up to 192KHz/24bit for audiophile-grade clarity.

## Overview

The Cubilux USB C to SPDIF Transmitter is a unidirectional adapter that converts USB-C ports on laptops and computers into high-fidelity optical audio outputs. Supporting up to 192KHz/24bit audio and 5.1 surround sound, it delivers pristine digital audio to soundbars, DACs, and amplifiers. Designed exclusively for full-featured USB-C ports, this compact adapter ensures plug-and-play convenience for professional-grade sound setups.

## 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: Perfect! - Worked Perfectly to connect my studio speakers to my desktop computer.
Review: Does it’s job - Works just as I expected but my iPhone 15 didn’t. Hoping to use the transmitter to connect the iPhone to my stereo’s SPDIF input I found the phone stuttered (jitter perhaps) every few seconds making it unlistenable. I’ll buy another Cubilux adapter when the need arises.

## 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 | #15,691 in Electronics ( See Top 100 in Electronics ) #31 in Digital-Analog Converters |
| Customer Reviews | 4.3 4.3 out of 5 stars (806) |
| Date First Available | January 14, 2022 |
| Item Weight | 0.704 ounces |
| Item model number | CUB-USBOPT |
| Manufacturer | Cubilux |
| Product Dimensions | 9 x 0.8 x 0.6 inches |

## 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

### ⭐⭐⭐⭐⭐ Perfect!
*by D***S on January 6, 2026*

Worked Perfectly to connect my studio speakers to my desktop computer.

### ⭐⭐⭐⭐⭐ Does it’s job
*by R***I on November 22, 2025*

Works just as I expected but my iPhone 15 didn’t. Hoping to use the transmitter to connect the iPhone to my stereo’s SPDIF input I found the phone stuttered (jitter perhaps) every few seconds making it unlistenable. I’ll buy another Cubilux adapter when the need arises.

### ⭐⭐⭐⭐⭐ 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.

## 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.fi/products/408710372-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to](https://www.desertcart.fi/products/408710372-cubilux-usb-c-to-spdif-transmitter-unidirectional-type-c-to)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-16*