1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your MICROWARE Digital to Analog Audio Converter 192KHz, Model AU511US-NEW. This device is designed to convert digital audio signals (SPDIF Coaxial or Toslink Optical) into analog L/R RCA and 3.5mm jack audio outputs, enabling connection to older audio systems or headphones.
Please read this manual thoroughly before using the product to ensure proper function and to prevent damage.
2. Package Contents
Verify that all items listed below are included in your package:
- 1x MICROWARE Digital to Analog Audio Converter Unit
- 1x Toslink Optical Cable
- 1x USB Power Cable
- 1x 5V Power Adapter (Wall Plug)
- 1x User Manual

Image: Contents of the product package, including the converter, cables, and manual.
3. Product Overview
The MICROWARE Digital to Analog Audio Converter features a compact design with clearly labeled input and output ports.
3.1. Front Panel
- Power LED: Indicates power status.
- 3.5mm Headphone Jack: For connecting headphones or other 3.5mm audio devices.
- L/R RCA Output: Red (Right) and White (Left) jacks for analog audio output.
3.2. Rear Panel
- SPDIF (Optical) Input: For connecting Toslink optical audio cables.
- Coaxial Input: For connecting coaxial digital audio cables.
- DC 5V Power Input: For connecting the USB power cable and adapter.

Image: Front and rear panel connections of the converter.

Image: Side view of the converter, emphasizing its durable construction.
4. Setup Instructions
Follow these steps to connect your Digital to Analog Audio Converter:
- Prepare the Optical Cable: If using the Toslink optical cable, remove the protective rubber caps from both ends of the cable before insertion.
- Connect Digital Audio Input: Connect your digital audio source (e.g., TV, PS4, Blu-ray player) to the converter using either a Toslink optical cable (to the SPDIF input) or a coaxial cable (to the COAXIAL input).
- Connect Analog Audio Output: Connect the converter's L/R RCA outputs to your analog audio receiver, amplifier, or speakers using RCA cables (not included). Alternatively, connect headphones to the 3.5mm headphone jack.
- Connect Power: Connect the USB power cable to the DC 5V input on the converter, then plug the USB end into the provided 5V power adapter and into a wall outlet. The Power LED on the converter will illuminate.
- Configure Audio Source: Crucially, set your audio source device's (e.g., TV, game console) digital audio output format to PCM or LPCM. This converter does not support 5.1 channel audio formats like Dolby Digital or DTS. Refer to your source device's manual for specific audio output settings.

Image: Step-by-step connection diagram for the converter.

Image: Example of TV audio output settings for PCM/LPCM.

Image: Toslink cable with protective rubber caps.
5. Operating Instructions
Once all connections are made and your audio source is configured to output PCM/LPCM, the converter will automatically process the digital audio signal and output it as analog audio. No additional drivers or software are required.
- Ensure the power indicator light on the converter is on.
- Adjust the volume on your connected analog audio device (amplifier, speakers, or headphones).
- If switching between different digital audio sources, ensure each source is set to PCM/LPCM output.

Image: Converter connected to a TV and outputting to speakers.

Image: Compatibility diagram for various input and output devices.
6. Maintenance
To ensure the longevity and optimal performance of your converter:
- Keep the device in a cool, dry place, away from direct sunlight, high temperatures, and humidity.
- Avoid exposing the device to water or other liquids.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure all cables are securely connected but do not force them.
7. Troubleshooting
If you encounter issues with your converter, refer to the following common problems and solutions:
- No Sound Output:
- Ensure the converter is powered on and the Power LED is illuminated.
- Verify all cables (digital input, analog output, power) are securely connected.
- Crucially, check your source device's audio output settings. It MUST be set to PCM or LPCM. This converter does not support Dolby Digital, DTS, or other 5.1 channel formats.
- Increase the volume on your connected analog audio device.
- If using an optical cable, ensure the protective rubber caps have been removed from both ends.
- Distorted or Thumping Sound:
- This often indicates an issue with the digital input signal. Double-check that the optical or coaxial cable is fully inserted into both the source device and the converter. A loose connection can cause signal degradation.
- Confirm the source device's audio output is set to PCM/LPCM. Incorrect formats can lead to noise.
- Test with a different digital audio cable if possible.
- Intermittent Audio:
- Check all cable connections for looseness.
- Ensure the power supply is stable. Try plugging the power adapter into a different outlet.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | AU511US-NEW |
| Input Audio | Coaxial or Toslink digital audio |
| Output Audio | L/R RCA, 3.5mm Jack audio |
| Sampling Rate Support | 32, 44.1, 48, 96, 192 KHz |
| Input Bit Stream | 24-bit S/PDIF (left and right channels) |
| Power Supply | DC 5V (via USB power cable and adapter) |
| Product Dimensions | 1.1 x 0.3 x 0.8 inches (approx. 2.8 x 0.76 x 2.03 cm) |
| Weight | 3.2 ounces (approx. 90.7 grams) |

Image: Converter dimensions.
9. Warranty and Support
MICROWARE provides customer support for this product:
- Refund Policy: A 30-day refund policy is available.
- Technical Support: 24-hour online technical support is provided.
For any questions or assistance, please contact MICROWARE customer service through the platform where you purchased the product.




