Introduction

Congratulations on your purchase of the Radium, part of the USB Keystation series of MIDI controllers brought to you by M-Audio.You may use your Radium in conjunction with a USB equipped PC or Macintosh computer and appropriate music software to enter a full range of MIDI note and controller information. You will be able to discover the wonderful world of Computer Music with a set of complete musical instruments from your sound card, sound modules, or workstation. The Radium gives you full control over MIDI parameters, while utilizing proven M-Audio USB MIDI interface technology. The Radium will also serve your needs as a standalone MIDI controller.

This manual will help you become familiar with the powerful features of the Radium. After reading the manual carefully, you will have a clear understanding of how to transmit different MIDI messages to other instruments and equipment. For ease of use of MIDI implementation, we strongly recommend that you have the manual at hand when you are using the keyboard, especially if you are new to the world of MIDI.

What’s in the Box

Included in your Radium, you should find:

1.Radium USB Keystation MIDI Controller

2.One (1) standard USB cable

3.PC/Mac Driver CD

4.This manual and warranty registration card

Radium Features

The Radium MIDI controller keyboard provides either 61 or 49 dynamic keys, pitch and mod wheels, a data slider, 8 assignable sliders and 8 assignable knobs.

Connects easily to your computer—no tools or disassembly required

When used with USB, may be parasitically powered by your computer’s USB port

May be used as a completely portable standalone controller when powered by a 9VDC external power supply (or internal battery, Radium49 only)

Provides two MIDI OUT jacks for sending MIDI to external devices via computer or as standalone MIDI controller

Footswith jack provided for sustain pedal (pedal optional)

Offers a great variety of useful MIDI functions, even though containing no built-in sound capabilities

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M-Audio RAD-050503 warranty Introduction, What’s in the Box, Radium Features

RAD-050503 specifications

The M-Audio RAD-050503 is a powerful audio interface designed for musicians, producers, and sound engineers seeking high-quality recording and playback capabilities. This device is particularly notable for its versatility and high-performance features, making it an excellent choice for both home studios and professional environments.

One of the standout characteristics of the RAD-050503 is its exceptional audio quality, offering high-resolution audio capture at sample rates up to 192 kHz. This level of fidelity ensures that recordings are true to the original sound, preserving the nuances and subtleties of each instrument or voice. The device supports both 24-bit and 32-bit audio formats, providing flexibility for various recording requirements.

Equipped with multiple input options, the RAD-050503 includes XLR/TRS combo jacks that cater to microphones, guitars, and line-level sources. This flexibility makes it easy to connect different recording instruments without needing additional interfaces. The device also features phantom power, enabling the use of condenser microphones, which are essential for capturing high-quality vocal tracks.

For monitoring, the RAD-050503 provides high-output headphone outputs and balanced TRS main outputs. This ensures that users can achieve accurate sound representation during recording sessions, allowing for real-time monitoring without latency issues. The built-in zero-latency monitoring feature further enhances the recording experience by allowing musicians to hear their inputs directly through their headphones without delay.

In terms of connectivity, the RAD-050503 is USB-powered, providing a straightforward plug-and-play setup with minimal fuss. It is compatible with both Mac and Windows operating systems, making it accessible for a wide range of users. The interface is also equipped with MIDI I/O ports, allowing for seamless integration with MIDI devices, synthesizers, and controllers.

The rugged, compact design of the RAD-050503 makes it highly portable, making it suitable for musicians on the go. Users can easily transport it to live gigs or collaborate in different studio environments. The unit's thoughtful layout, featuring easy-to-use knobs and indicators, allows for intuitive operation, catering to both novice and experienced users alike.

In summary, the M-Audio RAD-050503 audio interface combines top-notch audio performance, versatile connectivity options, and user-friendly design, making it an excellent choice for anyone serious about recording and producing high-quality music.