D Debra AU200 Pro
D Debra Audio AU200 Pro UHF Wireless Microphone System User Manual
Model: AU200 Pro
Introduction
The D Debra Audio AU200 Pro is a professional UHF 2-channel wireless microphone system designed for various applications including karaoke, church events, parties, and public speaking. This system provides clear audio transmission with a reliable wireless connection, offering both a handheld microphone and a bodypack transmitter with lavalier and headset microphone options for versatile use.

Image: The D Debra Audio AU200 Pro system, featuring the main receiver unit, a handheld microphone, and a bodypack transmitter with an attached headset microphone and a separate lavalier microphone.
Package Contents
Please verify that all items listed below are included in your package. If any items are missing or damaged, please contact customer support.
- UHF Wireless Receiver Unit
- Handheld Wireless Microphone
- Bodypack Transmitter
- Lavalier Microphone (for bodypack)
- Headset Microphone (for bodypack)
- Power Adapter
- Audio Connection Cable (6.35mm / 1/4 inch jack)
- Receiver Antennas (2x)
- AA Batteries (4x, typically for initial use, check product for exact inclusion)

Image: A complete view of all components included in the D Debra Audio AU200 Pro package, laid out for inspection.
Product Features
- UHF Wireless Technology: Ensures stable signal transmission and minimizes interference.
- Dual Channel System: Supports simultaneous use of two microphones (one handheld, one bodypack).
- Automatic Frequency Pairing: Simplifies setup by automatically matching frequencies between transmitters and receiver.
- Independent Volume Control: Each channel's volume can be adjusted separately on the receiver.
- Durable Construction: Receiver features an aluminum alloy panel for enhanced durability.
- Extended Range: Offers a stable transmission distance of up to 50 meters (164 feet) in optimal conditions.
- Versatile Microphone Options: Includes a handheld microphone and a bodypack with both lavalier and headset microphone attachments.
- Long Battery Life: Microphones and bodypack provide 4-5 hours of continuous operation on AA batteries.
- Wide Compatibility: Connects to various devices such as smartphones, laptops, PCs, tablets, speakers, and amplifiers.

Image: Close-up of the receiver highlighting its durable aluminum alloy construction.

Image: Illustration of the automatic UHF frequency pairing process between the microphone and receiver.

Image: Demonstrating independent volume adjustment for each microphone channel.

Image: Visual representation of the 50-meter remote transmission range of the system.

Image: Instructions for installing AA batteries into the bodypack and handheld microphone, showing 4-5 hours of battery life.
Setup Guide
- Unpack Components: Carefully remove all items from the packaging and ensure all components listed in the "Package Contents" section are present.
- Position the Receiver: Place the UHF wireless receiver unit on a stable, flat surface. Ensure it is away from potential sources of interference such as large metal objects, Wi-Fi routers, or other wireless devices. For optimal signal reception, position the receiver's antennas vertically and ensure they are unobstructed.
- Connect Power: Connect the provided power adapter to the DC IN port on the back of the receiver unit, then plug the adapter into a standard electrical outlet.
- Connect Audio Output: Use the supplied audio connection cable (or an XLR cable for balanced output, if available on your receiver model) to connect the receiver's audio output (MIX OUT or individual channel outputs) to the input of your amplifier, mixer, or powered speaker.
- Install Batteries in Transmitters:
- Handheld Microphone: Unscrew the bottom part of the microphone and insert two AA batteries, observing the correct polarity (+/-). Screw the bottom back on securely.
- Bodypack Transmitter: Open the battery compartment on the bodypack and insert two AA batteries, observing the correct polarity (+/-). Close the compartment.
Note: Batteries are typically not included or are for initial testing. Use fresh, high-quality AA batteries for best performance.
- Attach Microphones to Bodypack: If using the bodypack, plug either the lavalier microphone or the headset microphone into the bodypack's microphone input jack. Secure the lavalier mic to clothing or position the headset mic comfortably.
- Power On System:
- Turn on the receiver unit using its power button. The power indicator light should illuminate.
- Turn on the handheld microphone and the bodypack transmitter. The system should automatically pair, and the RF indicator lights (RF-A, RF-B) on the receiver corresponding to the active microphones should light up, indicating a successful wireless connection.
- Initial Sound Check: Speak or sing into each microphone while gradually increasing the volume controls on the receiver and your connected audio device (amplifier/mixer). Adjust the volume to a comfortable listening level.
Operating Instructions
Volume Control
The receiver unit features independent volume control knobs for each channel (VOL A and VOL B). Adjust these knobs to control the output level of the corresponding microphone. Start with lower volume settings and gradually increase to avoid sudden loud sounds or feedback.
Microphone Usage
- Handheld Microphone: Hold the microphone approximately 2-6 inches from your mouth for optimal sound pickup. Avoid covering the microphone grille with your hand, as this can affect sound quality and signal.
- Lavalier Microphone: Clip the lavalier microphone to your clothing, ideally about 6-8 inches below your chin, ensuring it is not rubbing against fabric or jewelry.
- Headset Microphone: Position the headset microphone comfortably on your head, with the microphone element positioned near the corner of your mouth, about 1-2 inches away.
Optimizing Performance
- Maintain Line of Sight: For best performance and to prevent signal dropouts, try to maintain a clear line of sight between the microphone transmitters and the receiver antennas.
- Avoid Obstructions: Walls, large crowds, and metal structures can reduce the effective operating range.
- Battery Management: Monitor the battery indicators on the microphones/bodypack (if available) and replace batteries promptly when they are low to prevent unexpected power loss during use.

Image: Examples of the microphone system in use for a meeting host, family karaoke, singing on stage, and band performances.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the receiver and microphones. Do not use liquid cleaners or abrasive materials, as they can damage the finish or internal components.
- Battery Care: Remove batteries from microphones and bodypack if the system will not be used for an extended period to prevent battery leakage and damage.
- Storage: Store the system in a cool, dry place, away from direct sunlight, extreme temperatures, and high humidity. Keep components in their original packaging or a protective case to prevent physical damage.
- Antenna Care: Handle the receiver antennas carefully. Avoid bending or forcing them, as this can affect signal reception.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from microphone. |
|
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| Intermittent sound or dropouts. |
|
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| Poor sound quality (distortion, static). |
|
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Specifications
| Parameter | Value |
|---|---|
| Model Number | AU200 Pro |
| Microphone Form Factor | Handheld, Bodypack (with Lavalier/Headset) |
| Number of Channels | 2 |
| Power Source | Battery Powered (Transmitters), AC Powered (Receiver) |
| Battery Type (Transmitters) | AA batteries (4 required for system operation: 2 per transmitter) |
| Battery Life (approx.) | 4-5 hours |
| Material (Receiver) | Aluminum Alloy (Panel) |
| Material (Microphones/Bodypack) | Plastic |
| Signal-to-Noise Ratio | 70 dB |
| Frequency Response | 80Hz-15KHz |
| Operating Range | Up to 50 meters (best case) |
| Connectivity Technology | XLR (Output) |
| Compatible Devices | Smartphone, Laptop, Personal Computer, Tablet, Speaker, Amplifier |
| Item Dimensions (Receiver) | 210mm (L) x 150mm (W) x 35mm (H) |
| Item Dimensions (Handheld Mic) | 250mm (L) x 60mm (Dia) |
| Item Dimensions (Bodypack) | 90mm (L) x 70mm (W) |
| UPC | 787996934969 |

Image: A diagram illustrating the technical specifications and physical dimensions of the receiver, handheld microphone, and bodypack.
Warranty and Support
D Debra is committed to providing high-quality audio products. For specific warranty information, return policies, or technical support, please refer to the documentation included with your purchase or contact the seller directly. You may also visit the official D Debra brand store on Amazon for further assistance and product information: D Debra Amazon Store.
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