Midiplus Studio 4 Audio Interface User Manual

Introduction

Welcome to the Midiplus Studio 4 Audio Interface user manual. This guide provides detailed instructions for setting up, operating, maintaining, and troubleshooting your Studio 4 audio interface. The Studio 4 is a high-quality 4-input, 4-output audio interface designed for professional and home studio use, featuring 24-bit / 192KHz high-precision AD/DA converters and USB2.0 connectivity.

1. Setup Guide

1.1 Unpacking and Contents

Carefully unpack your Midiplus Studio 4. Ensure all components are present:

• Midiplus Studio 4 Audio Interface
• USB 2.0 Type B Cable
• Mini USB Cable (for external power, if needed)
• Software License Card (for Cubase LE)
• User Manual (this document)

1.2 Hardware Connections

Connect the Studio 4 to your computer using the provided USB 2.0 Type B cable. The device is USB bus-powered.

For stable operation or when connecting power-hungry devices, connect an external +5V power supply to the mini USB port.

Connect your microphones or instruments to the front panel combo XLR/TRS inputs.

Connect your studio monitors to the balanced LINE OUT (L/R) ports on the rear panel.

Connect headphones to the front panel headphone jack.

For MIDI devices, use the MIDI IN and MIDI OUT ports on the rear.

Figure 1: Front view of the Midiplus Studio 4 Audio Interface, showing inputs, gain knobs, and monitoring controls.

Figure 2: Rear view of the Midiplus Studio 4 Audio Interface, displaying line outputs, USB port, power input, and MIDI I/O.

1.3 Software Installation (Drivers)

The Midiplus Studio 4 supports plug-and-play operation on both Mac and Windows systems, often not requiring dedicated driver installation. It is compatible with ASIO4ALL for low-latency performance with various DAWs.

For optimal performance, always check the official Midiplus website for the latest drivers or firmware updates.

Install your preferred Digital Audio Workstation (DAW) software. The Studio 4 includes a license for Cubase LE.

2. Operating Instructions

2.1 Front Panel Controls

Figure 3: Detailed view of the Midiplus Studio 4 front panel, highlighting gain knobs, switches, and LED meters.

• GAIN Knobs: Adjust input gain for inputs 1 and 2. These are combo XLR/TRS inputs.
• 48V Phantom Power Switch: Activates +48V phantom power for condenser microphones connected to inputs 1 and 2.
• LINE/INST Switches: Toggle between line level and instrument level input for inputs 1 and 2.
• Monitor Volume Control: Adjusts the overall output volume for your studio monitors.
• Headphone Gain Control: Adjusts the volume for the headphone output.
• Input/Output Select Buttons (IN 1 2, IN 3 4, OUT 1 2, OUT 3 4): Control the monitor matrix, allowing you to select which inputs and outputs are routed to the monitor and headphone outputs.
• Stereo/Mono Switch: Toggles the monitoring mode between stereo and mono.
• Single/Multi Switch: Selects between single or multiple input monitoring modes.
• LED Meters: Indicate input/output levels and clipping.

2.2 Rear Panel Connections

Refer to Figure 2 for a visual representation of the rear panel connections.

• LINE OUT (L/R): Balanced outputs for connecting to studio monitors.
• MONITOR OUT (L/R): Additional balanced outputs.
• LINE IN (L/R): Line-level inputs 3 and 4.
• USB 2.0: Connects to your computer.
• POWER +5V ONLY: Mini USB port for optional external power.
• MIDI IN/OUT: Standard 5-pin DIN connectors for MIDI devices.

3. Maintenance and Care

To ensure the longevity and optimal performance of your Midiplus Studio 4, follow these guidelines:

• Cleaning: Use a soft, dry cloth to wipe the exterior. Avoid abrasive cleaners or solvents. Do not spray liquids directly onto the device.
• Storage: Store the unit in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Avoid dropping or subjecting the unit to strong impacts. Protect the knobs and connectors from excessive force.
• Ventilation: Ensure proper ventilation around the unit to prevent overheating.

4. Troubleshooting

If you encounter issues with your Midiplus Studio 4, refer to the following common problems and solutions:

No Power/Device Not Recognized:

• Ensure the USB cable is securely connected to both the interface and your computer.
• Try a different USB port on your computer.
• If using a USB hub, try connecting directly to the computer or use a powered USB hub.
• If the device is not receiving enough power from the USB bus, connect an external +5V power supply to the mini USB port.
• Restart your computer.

No Sound Output:

• Check all cable connections to your monitors and headphones.
• Ensure the Monitor Volume and Headphone Gain knobs are turned up.
• Verify that the correct input/output routing is selected using the IN/OUT buttons.
• Check your computer's sound settings and your DAW's audio preferences to ensure the Midiplus Studio 4 is selected as the input/output device.
• Ensure the LED meters are showing activity when audio is present.

Input Signal Too Low/High:

• Adjust the GAIN knobs for the respective inputs.
• Ensure the LINE/INST switch is set correctly for your connected device (e.g., INST for guitars, LINE for keyboards).
• If using a condenser microphone, ensure 48V phantom power is enabled.

Latency Issues:

• Adjust the buffer size in your DAW's audio settings. Lower buffer sizes reduce latency but require more CPU power.
• Ensure you are using ASIO drivers (Windows) or Core Audio (Mac) for optimal performance.
• Close other applications that may be consuming system resources.

5. Technical Specifications

6. Warranty and Support

Midiplus products are designed for reliability and performance. For warranty information, please refer to the documentation included with your purchase or visit the official Midiplus website.

For technical support, driver downloads, or further assistance, please visit the Midiplus official support page or contact their customer service.

Protection plans are available for extended coverage. Please refer to your retailer for details on available protection plans.