BOMGE BMG11S
BOMGE BMG11S USB Audio Interface User Manual
Model: BMG11S
Introduction
Thank you for purchasing the BOMGE BMG11S USB Audio Interface. This high-fidelity, ultra-low latency audio interface is designed for professional-sounding recordings on both PC and Mac, making it ideal for musicians, podcasters, and content creators. This manual provides detailed instructions for setting up, operating, and maintaining your device to ensure optimal performance.

Figure 1: Front view of the BOMGE BMG11S USB Audio Interface, showcasing its compact red metal casing and control knobs.
Key Features
- Record studio-quality recordings for your music and podcasts: High-performance converters enable professional-sounding recordings, letting you record and mix at up to 24-bit/192kHz. Your recordings will retain all sound quality. Its exceptional configuration delivers pristine sound capture, making it a top choice for musicians, podcasters, and content creators seeking professional-grade recording results.
- Professional Mic Pre-amplifier & 48V Phantom Power: This USB audio interface built-in a Mic Pre-amp and 48V phantom power. It is comparable to independent boutique preamps, with low distortion and ultra-low noise. By using a condenser microphone, you will be able to inject great clarity and detail into your recordings. A switchable Air mode will add extra clarity to your vocals when recording with your S11, and ensure clean and transparent sound capture.
- Designed for perfect guitar tone: When recording guitar and bass, there's no need to sacrifice the tone of high-headroom instrument inputs. Bring your instruments into full view without any unwanted clipping or distortion with our Gain Halos.
- Ultra-Low Latency and Monitoring: Enjoy lag-free monitoring and recording thanks to the ultra-low latency performance of the 11S audio interface. Its advanced technology ensures minimal delay between your inputs and the output, allowing you to capture performances in real-time with precision and accuracy. It allows users to monitor their input sources in real-time without perceptible delay. This ensures a smooth recording experience and helps with precise timing during performances.
- Plug and Play & Compatible with Recording Softwares: The 11S USB audio interface supports Mac OS and Windows XP or later. It is compatible with many popular recording software, including Audacity, Ableton live, Steinberg Cubase, etc. These software aren't included in the product. The corresponding software and drivers need to be downloaded and installed by yourself. The small, ultra-portable size lets you take it anywhere and use it anywhere, providing flexible options for your music production.
- No External Power: The BMG11S Audio Interface is designed to stand up to days on the road, connecting straight to your Mac or PC via USB cable, with no external power required.
Setup
Follow these steps to set up your BOMGE BMG11S audio interface.
1. Driver Installation (if necessary)
While the BMG11S is largely plug-and-play, some operating systems or specific software may require dedicated drivers. Please visit the official BOMGE website to download and install the latest drivers for your operating system (Mac OS or Windows XP/later) if prompted or if you experience connectivity issues.
2. Connecting to Your Computer
Connect the BMG11S to your computer (PC or Mac) using the provided USB cable. The device is bus-powered, meaning no external power supply is needed.

Figure 2: Rear panel connections, illustrating USB connection to a computer and line outputs to speakers.
3. Connecting Microphones and Instruments
The BMG11S features two input channels. Channel 1 supports XLR for microphones and 1/4-inch for instruments, while Channel 2 supports 1/4-inch for instruments.
- Microphones: Connect your microphone to the XLR input on Channel 1. If using a condenser microphone, press the 48V Phantom Power button to supply power.
- Instruments: Connect your guitar, bass, or keyboard to the 1/4-inch input on Channel 1 or Channel 2. Ensure the "INST" button is engaged for instrument-level signals on Channel 2.

Figure 3: Front panel connections, showing inputs for microphones, keyboards, guitars, and headphones.
4. Connecting Headphones and Speakers
- Headphones: Plug your headphones into the 1/4-inch headphone jack on the front panel. Adjust the MONITOR knob to control headphone volume.
- Studio Monitors/Speakers: Connect your active studio monitors or speakers to the LEFT and RIGHT line outputs on the rear panel using 1/4-inch TRS cables.

Figure 4: A typical setup showing the BOMGE BMG11S connected to headphones, a microphone, and a computer for recording.
Operating Instructions
1. Adjusting Input Gain
Use the "GAIN" knobs for each channel to adjust the input level of your microphone or instrument. The "SIG" (Signal) indicator lights will help you set appropriate levels: green indicates a signal, while red indicates clipping (signal too hot). Adjust the gain to keep the "SIG" light green, occasionally flashing orange, but avoid constant red.
2. Phantom Power (48V)
The 48V button provides phantom power for condenser microphones. Press this button only when using a condenser microphone that requires external power. Ensure your microphone is connected before activating phantom power to prevent damage.
3. Direct Monitoring
The "DIRECT MONITOR" button allows you to hear your input signal directly through your headphones or speakers with zero latency. This is crucial for recording to avoid delay between your performance and what you hear. When engaged, you hear your live input mixed with the playback from your computer.

Figure 5: The audio interface highlighting its zero-latency monitoring capability, allowing real-time audio feedback.
4. Software Compatibility
The BMG11S is compatible with a wide range of Digital Audio Workstations (DAWs) and recording software on Mac OS and Windows, including but not limited to Audacity, Ableton Live, Steinberg Cubase, GarageBand, Logic Pro, Reaper, Reason, FL Studio, Studio One, Audition, and OBS. Select the BOMGE BMG11S as your audio input/output device within your chosen software's audio settings.

Figure 6: An example of a music production setup, demonstrating the interface's compatibility with various recording software.
5. Optimizing Guitar Tone
The instrument inputs are designed to handle high-headroom signals, ensuring your guitar and bass tones are captured without unwanted clipping or distortion. Utilize the "Gain Halos" (SIG indicators) to visually confirm optimal input levels for your instruments.

Figure 7: The audio interface integrated into a studio environment, emphasizing its role in capturing high-quality instrument audio.
6. Product Video Overview
For a visual guide on the BOMGE BMG11S USB Audio Interface, please watch the official product video below:
Video 1: Official overview of the BOMGE BMG11S USB Audio Interface, demonstrating its features and connectivity.
Maintenance
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the interface to extreme temperatures, humidity, or direct sunlight.
- Do not attempt to disassemble the unit. Refer to qualified service personnel for any repairs.
- Disconnect all cables when not in use for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power/device not recognized | USB cable not properly connected; faulty USB port; driver issue. | Ensure USB cable is securely connected. Try a different USB port or cable. Reinstall drivers from the BOMGE website. |
| No sound output | Incorrect audio output selected in software; MONITOR knob turned down; faulty cables/speakers/headphones. | Check audio settings in your DAW/OS to ensure BMG11S is selected as output. Increase MONITOR volume. Test with different cables, headphones, or speakers. |
| No input signal | Incorrect input selected in software; GAIN knob too low; 48V not engaged for condenser mic; faulty mic/instrument/cable. | Verify input selection in your DAW. Increase GAIN. Activate 48V for condenser mics. Test with another mic/instrument/cable. |
| Audio clipping/distortion | Input gain too high. | Reduce the GAIN knob until the "SIG" indicator no longer shows red. |
| Latency during recording | Direct Monitoring not enabled; software buffer size too high. | Engage the "DIRECT MONITOR" button. Adjust your DAW's buffer size settings to a lower value (e.g., 128 or 256 samples). |
Specifications
| Feature | Detail |
|---|---|
| Brand | BOMGE |
| Model | BMG11S |
| Item Weight | 1.06 pounds |
| Product Dimensions | 5.55 x 3.35 x 1.85 inches |
| Body Material | Metal |
| Connectivity Technology | USB |
| Number of Channels | 4 |
| Hardware Interface | 1/4-inch Audio, USB 3.1 Type C, USB 3.0, Headphone |
| Connector Type | XLR to 1/4-Inch, 1/4-Inch Straight, XLR to XLR |
| Compatible Devices | Android, Personal Computer |
| Operating System | Linux, Windows 10 and above operating systems, Mac OS, Android |
| Supported Software | GarageBand, Cubase, Logic Pro, Reaper, Reason, Ableton Live, FL Studio, Studio One, Audition, OBS |
| Voltage | 5 Volts (USB powered) |
| Phantom Power | 48V |
| Max Sample Rate/Bit Depth | 24-bit/192kHz |
Warranty and Support
BOMGE products are designed for reliability and performance. For information regarding warranty coverage, technical support, and service, please refer to the warranty card included with your product or visit the official BOMGE website. Keep your purchase receipt as proof of purchase for warranty claims.
For further assistance, you may also contact BOMGE customer support directly through their official channels.