---
product_id: 650458389
title: "Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet"
brand: "cubilux"
price: "B/.118"
currency: PAB
in_stock: true
reviews_count: 6
category: "Cubilux"
url: https://www.desertcart.com.pa/products/650458389-cubilux-ucstr-b3-usb-to-spdif-input-output-adapter-2
store_origin: PA
region: Panama
---

# Plug & Play, No Drivers 192kHz/24-bit Hi-Res Stereo 2-in-1 USB↔SPDIF Tx/Rx Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet

**Brand:** cubilux
**Price:** B/.118
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your digital audio game with Cubilux’s sleek 2-in-1 USB↔SPDIF adapter — don’t get left behind in stereo sound evolution!

## Quick Answers

- **What is this?** Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet by cubilux
- **How much does it cost?** B/.118 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/650458389-cubilux-ucstr-b3-usb-to-spdif-input-output-adapter-2)

## 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

- • **Effortless Setup:** True plug & play design means zero driver hassle—just connect and enjoy premium audio instantly.
- • **Compact & Durable Build:** Sleek copper housing with USB-C input blends durability with modern aesthetics for your professional setup.
- • **Exclusive Compatibility:** Optimized for laptops and PCs—perfect for MacBook and Windows users craving pristine stereo sound (no phones/tablets).
- • **Audiophile-Grade Sound Quality:** Supports high-resolution 192kHz/24-bit stereo audio ensuring crystal-clear, lossless digital sound.
- • **Seamless 2-Way Audio Conversion:** Transmit and receive digital stereo audio effortlessly between USB and SPDIF devices for ultimate flexibility.

## Overview

The Cubilux UCSTR-B3 is a premium 2-in-1 USB to SPDIF optical transmitter and receiver adapter designed for laptops and PCs. It delivers high-resolution stereo audio up to 192kHz/24-bit with seamless bidirectional conversion, all in a compact, plug-and-play copper chassis. Ideal for professionals seeking flawless digital audio streaming without driver complications, it supports only stereo sound and excludes phones, tablets, and certain USB ports.

## Description

Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet: desertcart.com: Industrial & Scientific

Review: Optical to USB works great - Wow, if you need optical to USB this does the trick. Windows is an annoying pain and you must get Bit depth and rate matching otherwise audio is wonky. Once your settings are correct it works great.
Review: Simple class compliant USB digital converter with Toslink optical output and rare input - UPDATE - screen saver / sleep issue in Windows 11 and workaround: After using this adapter for a while I discovered that this device prevents my screen saver from activating and my display from sleeping. I was able to work around it by disabling the associated USB Input Device in Device Manager. Once disabled my screen saver activates and my display/PC will go into sleep mode again, and the device still works. This seems to be a common issue with some other USB DACs which is what led me to the workaround. This USB digital converter does just what it advertises at a reasonable price point. It is plug and play in Windows 11, showing as a generic S/PDIF in and out digital audio interface up to 24bit 192 kHz supporting DTS and Dolby Digital pass through to digital receivers (did not test either of those). Although using a Savitech chipset (9123L as confirmed by Cubilux support) it unfortunately does not supply ASIO drivers. A very similar product that does include an ASIO driver would be the Hifime S2 Digi which supports up to 32bit 384kHz. However I can't really dock points on this Cubilux since it doesn't advertise ASIO support and is priced accordingly cheaper. The construction of the Cubilux vs the S2 Digi is a bit nicer since it is made of metal instead of plastic, and uses a USB-C input port instead of Micro-USB. Works reliably for my application which is to provide a simultaneous stereo S/PDIF input and output interface for an old MOTU Audio Express device whose vendor-provided USB Windows drivers crackle and often fail to load after wake from sleep. Contrary to what it says on the listing it is actually also plug and play in Android on my S24 Ultra where I was able to access both the output and input. Same on Ubuntu Linux. Hopefully Cubilux will consider ASIO support in a v2 update.

## Features

- [USB C to SPDIF Input & Output Converter] – The 2-In-1 USB Optical Transmitter/Receiver allows you to record the stereo audio stream from your amplifier with your computer, or connect your laptop to a soundbar to play digital lossless music. This converter supports high-resolution sound up to 192KHz/24-bit for both input and output audio signals.
- [Simultaneous Audio Conversion] - This USB to SPDIF Transmitter and Receiver enables seamless audio transmission in both directions - from USB to SPDIF and from SPDIF to USB - providing maximum flexibility and convenience for your audio setup.
- [Only for Stereo Optical Transmission] – Please note that the adapter is ONLY for transferring stereo audio signals, and does NOT support 5.1 or 7.1 surround sound.
- [Plug & Play] – This device requires no additional drivers or software. Simply connect it to your USB source and your SPDIF audio system, and you're ready to enjoy high-quality audio in both directions.
- [Important Note] – This adapter is ONLY compatible with laptops, PCs or computers. The adapter does NOT support TV or Car USB ports due to the restriction of their USB interface. The adapter does NOT support phones or tablets due to the limitation of their sampling rate.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7DJRPPB |
| Best Sellers Rank | #118,030 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #164 in Signal Converters |
| Brand | Cubilux |
| Date First Available | June 19, 2024 |
| Interface Type | USB |
| Item Weight | 2.08 ounces |
| Item model number | Z10-14BK |
| Manufacturer | Cubilux |
| Material | Copper |
| Number of Channels | 2 |
| Number of Pins | 5 |
| Product Dimensions | 9.06 x 0.79 x 0.59 inches |

## Product Details

- **Brand:** Cubilux
- **Interface Type:** USB
- **Material:** Copper
- **Number of Channels:** 2
- **Number of Pins:** 5

## Images

![Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet - Image 1](https://m.media-amazon.com/images/I/71kldjcgoSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Optical to USB works great
*by C***D on September 13, 2025*

Wow, if you need optical to USB this does the trick. Windows is an annoying pain and you must get Bit depth and rate matching otherwise audio is wonky. Once your settings are correct it works great.

### ⭐⭐⭐⭐ Simple class compliant USB digital converter with Toslink optical output and rare input
*by A***N on May 3, 2025*

UPDATE - screen saver / sleep issue in Windows 11 and workaround: After using this adapter for a while I discovered that this device prevents my screen saver from activating and my display from sleeping. I was able to work around it by disabling the associated USB Input Device in Device Manager. Once disabled my screen saver activates and my display/PC will go into sleep mode again, and the device still works. This seems to be a common issue with some other USB DACs which is what led me to the workaround. This USB digital converter does just what it advertises at a reasonable price point. It is plug and play in Windows 11, showing as a generic S/PDIF in and out digital audio interface up to 24bit 192 kHz supporting DTS and Dolby Digital pass through to digital receivers (did not test either of those). Although using a Savitech chipset (9123L as confirmed by Cubilux support) it unfortunately does not supply ASIO drivers. A very similar product that does include an ASIO driver would be the Hifime S2 Digi which supports up to 32bit 384kHz. However I can't really dock points on this Cubilux since it doesn't advertise ASIO support and is priced accordingly cheaper. The construction of the Cubilux vs the S2 Digi is a bit nicer since it is made of metal instead of plastic, and uses a USB-C input port instead of Micro-USB. Works reliably for my application which is to provide a simultaneous stereo S/PDIF input and output interface for an old MOTU Audio Express device whose vendor-provided USB Windows drivers crackle and often fail to load after wake from sleep. Contrary to what it says on the listing it is actually also plug and play in Android on my S24 Ultra where I was able to access both the output and input. Same on Ubuntu Linux. Hopefully Cubilux will consider ASIO support in a v2 update.

### ⭐⭐⭐⭐⭐ It works!
*by H***A on February 25, 2025*

Rigged and built to last

## Frequently Bought Together

- Cubilux UCSTR-B3 USB to SPDIF Input Output Adapter, 2-in-1 USB to TOSLINK Optical Transmitter Receiver Compatible with MacBook, Laptop, Computer, PC, Stereo Sound ONLY, NOT for Phone or Tablet
- Cubilux USB A SPDIF Input Adapter for PC [Stereo Recording ONLY, NOT for Playing Audio] USB Optical Line-in Dongle, Toslink to USB Receiver, USB A SDPIF RX Interface Suitable for Laptop Computer
- KabelDirekt TOSLINK – Optical Audio Cable – 75ft – Fiber Optic Cord, S/PDIF Digital Audio Optical Cable for Soundbar, Stereo Systems, Home Cinema, Xbox One/PS4 – Designed in Germany

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**Shop now:** [https://www.desertcart.com.pa/products/650458389-cubilux-ucstr-b3-usb-to-spdif-input-output-adapter-2](https://www.desertcart.com.pa/products/650458389-cubilux-ucstr-b3-usb-to-spdif-input-output-adapter-2)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-05-19*