1. Introduction
Thank you for choosing the Debra V8/V4 Audio Mixer. This multi-purpose mixing console is designed to meet the needs of various audio applications, including family music production, live webcasting, K-song covers, and PC recording. It features a built-in sound card, Bluetooth reception, USB connectivity, and 48V phantom power for condenser microphones. Its compact and lightweight design allows for convenient power supply directly from a PC's USB port, a mobile power bank, or a USB AC/DC adapter.
2. Product Overview
The Debra V8/V4 Audio Mixer is a versatile tool for audio enthusiasts and professionals. The V8 model offers 8 channels, while the V4 model provides 4 channels, both equipped with essential features for high-quality sound mixing and recording.
Key Features:
- Bluetooth 5.0 connectivity for stable wireless audio streaming.
- USB interface for PC connection and recording.
- 48V Phantom Power for condenser microphones.
- Multiple mode input (MP3/U disk/SD card playback).
- Equalizing control for independent adjustment of mono bass.
- High-quality digital chip for improved sound quality and reduced background noise.
- High-definition headset output port for monitoring.
3. Setup Guide
3.1 Unboxing and Product List
Upon opening the package, ensure all components are present:
3.2 Power Supply
The mixer requires a 5V power supply. It can be powered via the included custom power plug, a mobile power bank, or a PC's USB port.
3.3 Connecting Devices
The mixer supports various input and output devices. Refer to the connection diagrams below for proper setup.
3.4 USB Connection
Connect the mixer to your computer via USB for live streaming or recording. The mixer functions as a sound card when connected to a PC.
3.5 Bluetooth Connection
Enable Bluetooth mode on the mixer and connect your smartphone or other Bluetooth-enabled device for stable audio transmission.
3.6 48V Phantom Power
The mixer provides 48V phantom power, essential for operating condenser microphones.
4. Operating Instructions
4.1 Key Functions and Controls
Familiarize yourself with the mixer's controls for optimal performance.
4.2 Equalizing Control
Each mono bass channel can be independently adjusted using the equalizing controls.
4.3 Multiple Mode Input
The mixer supports MP3/U disk and SD card playback, allowing you to enjoy music anytime.
4.4 Ear Monitoring
Insert headphones into the dedicated port to monitor your audio feedback and make adjustments.
4.5 High Quality Sound and Digital Chip
The mixer incorporates a high-quality DSP digital chip to minimize background noise and optimize voice details, ensuring a clearer and more beautiful sound.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the mixer's surface. Avoid using liquid cleaners or solvents, as they may damage the finish or internal components.
- Storage: Store the mixer in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
- Handling: Handle the mixer with care to prevent physical damage. Avoid dropping or subjecting it to strong impacts.
- Power Off: Always power off the mixer and disconnect it from the power source when not in use for extended periods.
6. Troubleshooting
No Sound Output:
- Check all cable connections (input, output, headphones).
- Ensure the mixer is powered on and the power indicator light is active.
- Verify that all volume knobs (channel, main, phone) are turned up appropriately.
- If using phantom power, ensure the +48V button is engaged for condenser microphones.
- Check the input source (microphone, instrument, USB, Bluetooth) and ensure it is active and sending a signal.
- If connected to a PC, verify that the mixer is selected as the audio input/output device in your computer's sound settings.
Bluetooth Connection Issues:
- Ensure the mixer is in Bluetooth mode.
- Check that Bluetooth is enabled on your transmitting device (smartphone, tablet).
- Make sure the mixer is not already connected to another device.
- Try restarting both the mixer and your Bluetooth device.
- Ensure your device is within the effective range of the mixer's Bluetooth signal.
Noise or Distortion:
- Check for loose or damaged cables.
- Ensure input gain levels are not set too high, causing clipping (indicated by the CLIP light).
- Adjust EQ settings to reduce unwanted frequencies.
- Verify that the power supply is stable and adequate.
- Minimize interference from other electronic devices.
7. Specifications
General:
- Brand Name: Debra
- Model Number: V4 (also available as V8)
- Type: Mixers, DJ Controllers, Effects Processors, Stage Effect Machine
- Origin: Mainland China
- Certification: CE, FCC
- Hign-concerned Chemical: None
Dimensions:
Audio Specifications (V8 Model):
| Parameter | Value |
|---|---|
| Mic Input Configuration | Electronically balanced, discrete |
| Mic Input Frequency Response | 10Hz to 20KHz |
| Mic Input Gain Range | +14 dB to 60dB |
| Mic Input SNR | 120dB E.I.N. |
| Line Input Configuration | Electronically balanced |
| Line Input Frequency Response | 10Hz to 13KHz |
| Line Input Gain Range | +10dB to +60dB |
| Line Input SNR | 95 dB E.I.N. |
| Overall Frequency Response | 10Hz to 70KHz |
| Overall Gain Range (Line) | -8 to +15 dB |
| Overall Gain Range (Mic) | +13 to +60 dB |
| Overall SNR (Line) | -96dB |
| Overall SNR (Mic) | 104dB E.I.N. |
| HI EQ | 12KHz, +/-15dB |
| MID EQ | 2.5KHz, +/-15dB |
| LOW EQ | 60 Hz, +/-15dB |
| Main Outputs | +28dBu balanced / +22 dBu unbalanced |
| Phones Output | +15dBu/150 |
Audio Specifications (V4 Model):
| Parameter | Value |
|---|---|
| Mic Input Configuration | Electronically balanced, discrete |
| Mic Input Frequency Response | 10Hz to 20KHz |
| Mic Input Gain Range | +14 dB to 60dB |
| Mic Input SNR | 120dB E.I.N. |
| Line Input Configuration | Electronically balanced |
| Line Input Frequency Response | 10Hz to 13KHz |
| Line Input Gain Range | +10dB to +60dB |
| Line Input SNR | 95 dB E.I.N. |
| Overall Frequency Response | 10Hz to 70KHz |
| Overall Gain Range (Line) | -8 to +15 dB |
| Overall Gain Range (Mic) | +13 to +60 dB |
| Overall SNR (Line) | -96dB |
| Overall SNR (Mic) | 104dB E.I.N. |
| HI EQ | 12KHz, +/-15dB |
| MID EQ | 2.5KHz, +/-15dB |
| LOW EQ | 60 Hz, +/-15dB |
| Main Outputs | +28dBu balanced / +22 dBu unbalanced |
| Phones Output | +15dBu/150 |
8. Warranty and Support
This product is covered by standard AliExpress buyer protection policies. For specific warranty details, please refer to the product listing on AliExpress or contact the seller directly. Key service commitments include:
- Free Returns: Enjoy free returns within 90 days of purchase.
- Fast Delivery: Receive a $1.00 coupon code if delivery is delayed. Refunds are available if the package is lost or items are damaged during transit, or if no delivery occurs within 60 days.
- Security & Privacy: Your personal details are protected and not shared with third parties without consent.
For further assistance, please contact the Debra Audio Store directly through the AliExpress platform.
9. Suitable Applications
The Debra V8/V4 Audio Mixer is suitable for a variety of uses:
10. Video Demonstration
Watch this video for a visual overview of the Debra V8 Audio Mixer's features and components.
