BOMGE U202 USB Audio Interface User Manual

1. Introduction

Thank you for choosing the BOMGE U202 USB Audio Interface. This device is designed to provide high-quality audio input and output for computer recording, streaming, and other audio production tasks. With its dual-channel inputs, mic preamplifiers, 48V phantom power, and 32-Bit/192kHz resolution, the U202 offers professional-grade audio performance in a compact and user-friendly package. Please read this manual thoroughly to ensure proper operation and to get the most out of your audio interface.

2. Safety Information

• Do not expose this device to rain or moisture.
• Do not remove the cover or back panel. There are no user-serviceable parts inside.
• Ensure the device is connected to a stable power source (5V/2A DC).
• Avoid placing the device near heat sources or in direct sunlight.
• Clean only with a dry cloth.
• Keep out of reach of children.

3. Package Contents

The BOMGE U202 package typically includes:

• BOMGE U202 USB Audio Interface
• USB Cable

Note: An inbox adaptor and built-in battery are not included. An external 5V/2A DC power source may be required for optimal performance, especially when using 48V phantom power.

4. Product Overview

Familiarize yourself with the various ports and controls on your BOMGE U202 audio interface.

Front Panel Controls:

• INPUT 1 / INPUT 2 (XLR/TS Combo Jacks): Connect microphones (XLR) or instruments/line-level devices (6.35mm TS).
• LINE / INST Switches: Toggle between line-level and instrument-level input for each channel.
• GAIN 1 / GAIN 2 Knobs: Adjust the input gain for each channel.
• CLIP Indicators: Light up when the input signal is too high, indicating potential clipping.
• LOOP BACK Switch: Engages the loopback function for internal routing of audio.
• STEREO / MONO Switch: Toggles monitoring between stereo and mono.
• DIR (Direct Monitor) Switch: Enables direct monitoring of inputs with zero latency.
• OUTPUT Knob: Controls the overall output volume to your studio monitors.
• PHONES Knob: Controls the volume for the headphone output.
• PHONES Jack: 6.35mm stereo headphone output.

Rear Panel Connections:

• USB Interface: Connects to your computer for data and power.
• POWER SOURCE (5V/2A DC): Input for external DC power supply.
• +48V Switch: Activates phantom power for condenser microphones.
• OUTPUTS 1 (L) / 2 (R): 6.35mm (TS/TRS) outputs for connecting to studio monitors or other audio equipment.

5. Setup

Follow these steps to set up your BOMGE U202 audio interface:

1. Connect to Computer: Connect the U202 to your computer using the provided USB cable. The device is plug-and-play and generally does not require additional drivers for most operating systems.



2. Power Supply: While the U202 can be bus-powered via USB, it is recommended to connect an external 5V/2A DC power supply (not included) to the 'POWER SOURCE' input, especially when using 48V phantom power or multiple inputs, to ensure stable operation.



3. Connect Inputs:
   
   • For microphones, connect via XLR cables to INPUT 1 or INPUT 2. If using a condenser microphone, activate the +48V phantom power switch on the rear panel.
   • For instruments (e.g., guitar, bass) or line-level devices, connect via 6.35mm TS cables to INPUT 1 or INPUT 2. Ensure the corresponding LINE/INST switch is set correctly (INST for instruments, LINE for line-level).



4. Connect Outputs:
   
   • Connect your studio monitors to the OUTPUTS 1 (L) and 2 (R) jacks on the rear panel using 6.35mm TS/TRS cables.
   • Connect your headphones to the PHONES jack on the front panel.
5. Software Setup: Select the BOMGE U202 as your audio input and output device in your computer's sound settings and your Digital Audio Workstation (DAW) software.

6. Operating Instructions

1. Adjust Input Gain: Slowly turn up the GAIN knob for the connected input until the signal is strong but the CLIP indicator does not light up frequently. Occasional flashes are acceptable, but constant illumination indicates clipping and potential distortion.
2. Activate Phantom Power (+48V): If using a condenser microphone, ensure the +48V switch on the rear panel is turned ON. Turn it OFF when not needed or when using dynamic microphones.
3. Direct Monitoring: Engage the DIR switch to monitor your input signal directly from the interface with zero latency. This is useful for recording to hear yourself without delay.
4. Stereo/Mono Monitoring: Use the STEREO/MONO switch to choose how your inputs are monitored. Mono is often preferred for recording vocals or single instruments, while stereo is suitable for playback or stereo sources.
5. Loop Back Function: The LOOP BACK switch allows you to route the audio output from your computer back into the interface's input. This is useful for streaming applications where you want to capture both your microphone and computer audio simultaneously.
6. Output Volume Control: Use the OUTPUT knob to adjust the volume for your studio monitors and the PHONES knob for your headphones.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use liquid cleaners or solvents.
• Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Cable Management: Ensure cables are not kinked or strained to prevent damage to the connectors and ports.

8. Troubleshooting

No Sound Output:

• Check all cable connections (USB, outputs to monitors, headphones).
• Ensure the U202 is selected as the output device in your computer's sound settings and DAW.
• Verify the OUTPUT and PHONES volume knobs are turned up.
• Check if the correct input is selected and gain is adjusted.

Distorted Sound:

• Check the CLIP indicators. If they are constantly lit, reduce the input GAIN.
• Ensure the LINE/INST switch is set correctly for your input source.
• Verify that your computer's audio settings and DAW are set to the correct sample rate and bit depth (32-Bit/192kHz).

Device Not Recognized by Computer:

• Try connecting to a different USB port.
• Restart your computer.
• Ensure the USB cable is not faulty.
• Verify that the U202 is receiving sufficient power, especially if using an external 5V/2A DC supply.

Phantom Power Not Working:

• Ensure the +48V switch on the rear panel is ON.
• Confirm that your condenser microphone requires 48V phantom power.
• Ensure an external 5V/2A DC power supply is connected for stable phantom power delivery.

9. Specifications

10. User Tips

• Dual Instrument Input: Yes, both INPUT 1 and INPUT 2 can be used simultaneously for connecting two guitars or other instruments. Ensure the 'INST' switch is engaged for each instrument input.
• Optimizing Phantom Power: For condenser microphones, always connect the microphone first, then turn on the +48V phantom power. When disconnecting, turn off +48V first, then unplug the microphone. This prevents potential damage to the microphone or interface.
• Zero-Latency Monitoring: Utilize the 'DIR' (Direct Monitor) switch to hear your input signal directly from the interface without any delay, which is crucial for comfortable recording.

11. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for any warranty claims.