---
product_id: 408710372
title: "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: "¥8132"
currency: JPY
in_stock: true
reviews_count: 13
category: "Cubilux"
url: https://www.desertcart.jp/products/408710372-usb-c-to-spdif-transmitter-unidirectional-type-c-to-optical
store_origin: JP
region: Japan
---

# Supports 5.1 surround sound Hi-Res 192kHz/24-bit audio USB-C to SPDIF output 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:** ¥8132
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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?** ¥8132 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/408710372-usb-c-to-spdif-transmitter-unidirectional-type-c-to-optical)

## 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

- • **Plug & Play Simplicity:** No drivers or software needed—just connect and enjoy crystal-clear stereo or surround sound instantly.
- • **Ultra-Crisp Hi-Res Audio:** Delivers pristine 48kHz to 192kHz/24-bit digital audio for rich, detailed sound that elevates every note.
- • **Compact & Sleek Metallic Design:** A stylish, lightweight adapter that fits perfectly into your professional workspace or studio setup.
- • **Seamless USB-C to Optical Audio:** Effortlessly convert your laptop’s USB-C port into a high-fidelity SPDIF transmitter for premium sound systems.
- • **Immersive 5.1 Surround Sound Ready:** Experience cinematic audio with true 5.1 channel output—perfect for home theaters and audiophile setups.

## Overview

The Cubilux USB C SPDIF Emitter is a unidirectional adapter that converts USB-C ports on computers into optical SPDIF outputs, supporting stereo and 5.1 surround sound at up to 192kHz/24-bit resolution. Designed for plug-and-play use with compatible devices, it delivers high-fidelity digital audio to soundbars, DACs, and amplifiers, making it an essential upgrade for audiophiles and professionals seeking crystal-clear sound without complicated 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 | #13,575 in Electronics ( See Top 100 in Electronics ) #25 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 out of 5 stars 818 Reviews |
| Finish | Metallic |
| Input Voltage | 5 Volts |
| Item Dimensions | 9 x 0.8 x 0.6 inches |
| Item Weight | 0.02 Kilograms |
| Item dimensions L x W x H | 9 x 0.8 x 0.6 inches |
| Manufacturer | Cubilux |
| 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 |
| 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

![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.jp/products/408710372-usb-c-to-spdif-transmitter-unidirectional-type-c-to-optical](https://www.desertcart.jp/products/408710372-usb-c-to-spdif-transmitter-unidirectional-type-c-to-optical)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-06*