StarTech.com ICUSBAUDIO2D USB Stereo Audio Adapter with SPDIF Digital Output - 96 kHz/24-bit Hi-Fi - 5.1 Surround - Hardware Volume Knob
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Product Features
Technical Overview
This USB audio adapter transforms standard USB connectivity into a comprehensive audio interface with both digital and analog outputs. The SPDIF digital output supports AC3 (Dolby Digital) and DTS pass-through, enabling direct connection to home theater receivers, soundbars, or digital audio systems without quality degradation. The analog side features 3.5mm headphone and microphone jacks that support 4-position TRRS headsets, providing complete personal audio connectivity.
Audio processing is handled by the dedicated VIA VT1630A chipset, which delivers a 91 dB signal-to-noise ratio for clean audio reproduction. The hardware volume knob allows precise level adjustment without software dependencies, while the bass/treble boost switch provides immediate tonal shaping. The device maintains compatibility with Windows audio frameworks and requires no drivers for basic functionality, though included software expands configuration options.
Key Product Advantages
The ICUSBAUDIO2D bridges the gap between basic computer audio and professional sound requirements through its dual-output architecture and high-resolution capabilities. Unlike basic USB audio dongles, this adapter preserves digital audio integrity via SPDIF while maintaining full analog connectivity for headsets and microphones.
Digital Audio Preservation
SPDIF output maintains pristine digital audio streams for home theater and high-end audio systems, supporting Dolby Digital and DTS formats without conversion loss.
- AC3/DTS Pass-Through
- Uncompressed Digital Audio
- Receiver-Compatible
Professional-Grade Analog Audio
96 kHz/24-bit DAC delivers studio-quality playback through the 3.5mm headphone output, while the microphone input supports TRRS headsets for clear voice communication.
- Hi-Fi Playback
- TRRS Headset Support
- 91 dB SNR
Hardware Control Convenience
Dedicated volume knob and EQ switch provide immediate adjustment without software navigation, complemented by LED sample rate indicators for at-a-glance status monitoring.
- Tactile Volume Control
- Bass/Treble Boost
- Visual Feedback
Deployment / Use Cases
This audio adapter serves as an essential upgrade for systems with inadequate or malfunctioning built-in audio, particularly in business, education, and home entertainment environments. Its compact form factor and USB power make it ideal for space-constrained setups where internal expansion isn't feasible.
Common deployment scenarios include enhancing laptop audio for video conferencing with headset compatibility, adding SPDIF output to media center PCs for home theater integration, and providing reliable audio expansion for compact desktop systems in call centers or reception areas. The adapter also functions as a temporary audio solution during system repairs or as a permanent upgrade for legacy systems lacking modern audio outputs.
Home Theater PC Integration
Connect media center PCs to AV receivers via SPDIF for surround sound movie playback without sacrificing analog headphone connectivity for private listening.
Business Communication Enhancement
Upgrade conference room PCs or individual workstations with reliable headset support and hardware volume control for consistent audio during video calls and presentations.
Physical Profile
Housed in a compact black external enclosure measuring 1.80" wide × 0.60" high × 1.9" deep, the adapter occupies minimal desk space while remaining accessible for adjustments. The attached 16-inch USB cable provides placement flexibility, and the lightweight 1.16-ounce design ensures portability between systems. The matte black finish blends discreetly with most computing environments, and the top-mounted controls are intuitively positioned for easy access during use.
- Width
- 24 bit
- Height
- 0.60" (15.24 mm)
- Weight
- 1.16 oz (33 g)
What's in the Box
The adapter ships complete with all necessary components for immediate deployment.
Highlights
- SPDIF digital output with AC3/DTS pass-through support
- 96 kHz/24-bit Hi-Fi USB audio playback
- 5.1 surround sound supported on Windows systems
- Hardware volume knob and bass/treble boost EQ switch
- 3.5mm headphone and microphone ports with TRRS support
- LED sample rate indicators for visual feedback
- 16-inch attached USB cable for flexible placement
- VIA VT1630A audio processor with 91 dB SNR
- Compact external form factor in black finish
- 2-year limited warranty with RoHS/REACH/WEEE compliance
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | ICUSBAUDIO2D |
| Brand Name | StarTech.com |
| Product Name | USB Stereo Audio Adapter External Sound Card with SPDIF Digital Audio |
| Packaged Quantity | 1 Each |
| Product Type | External Sound Box |
| Technical Information | |
| Audio Processor Manufacturer | VIA |
| Audio Processor Model | VT1630A |
| Host Interface | USB 2.0 |
| Signal to Noise Ratio (SNR) | 91 dB |
| Maximum Playback Sampling Rate | 96 kHz |
| DAC Data Width | 24 bit |
| Sound Channels | 5.1 |
| Physical Characteristics | |
| Product Color | Black |
| Form Factor | External |
| Height | 0.60" (15.24 mm) |
| Width | 1.80" (45.72 mm) |
| Thickness | 1.9" |
| Weight (Approximate) | 1.16 oz (33 g) |
| Miscellaneous | |
| Package Contents | USB Stereo Audio Adapter External Sound Card with SPDIF Digital Audio 1 x Software CD 1 x Instruction Manual |
| Country of Origin | China |
| Environmentally Friendly | Yes |
| Environmental Certification | EU RoHS |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) 2,Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Warranty | |
| Limited Warranty | 2 Year |
User Manual
FAQ
What audio formats does the SPDIF output support?
The SPDIF digital output supports AC3 (Dolby Digital) and DTS pass-through, allowing uncompressed digital audio transmission to compatible receivers and sound systems. This preserves audio quality without conversion loss, making it ideal for home theater and high-fidelity audio applications where digital signal integrity matters.
Does this adapter support surround sound?
Yes, the adapter supports 5.1 surround sound output when used with Windows operating systems. The 5.1 channel configuration requires software configuration and compatible content, while the hardware provides the necessary audio processing through its VIA VT1630A chipset and digital/analog outputs.
What types of headsets are compatible with the 3.5mm ports?
The 3.5mm headphone and microphone ports support standard stereo headphones and 4-position TRRS headsets with microphone functionality. This compatibility covers most consumer and business headsets used for communication, gaming, and multimedia playback, providing both audio output and microphone input through a single connection when needed.
Is external power required for this USB audio adapter?
No, the adapter draws power directly from the USB 2.0 host port, requiring no external power supply or additional cables. This plug-and-play design simplifies installation and makes the device highly portable between different computers and locations without power constraints.
What operating systems are compatible with this audio adapter?
The adapter provides basic plug-and-play functionality with Windows systems without requiring additional drivers. The included software CD expands configuration options and enables full feature access. While primarily designed for Windows, some core audio functions may work with other operating systems, though advanced features like 5.1 surround and software control are Windows-specific.
How does the hardware volume knob function compared to software control?
The dedicated hardware volume knob provides direct analog control over audio output levels, functioning independently of software volume settings. This allows immediate adjustment without navigating operating system controls, ensuring consistent volume management even during software crashes or configuration changes. The knob offers precise tactile feedback and complements the bass/treble boost switch for quick tonal adjustments.
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