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ALTO PROFESSIONAL INTRODUCES AMAZING NEW RADIUS FAMILY OF WIRELESS MICROPHONES

Thu, January 22, 2015


Cumberland, RI USA (January 22, 2015)—Alto Professional (altoprofessional.com), the world’s leading innovator for live performance reinforcement products, today announced the introduction of their cutting-edge Radius 100 and 200 families of wireless microphone products. These new wireless microphones provide reliable, crystal-clear sound for a wide range of professional vocal applications, assuring users of an extremely stable, reliable wireless signal, with virtually no chance of dropout or interruption. This is the promise of wireless performance—delivered!

The key to their performance is their incredible new diversity technology. Alto’s diversity receiver design utilizes two separate, antenna systems for uncompromised wireless performance. The receiver constantly evaluates the incoming signals to each antenna, and instantly determines which one is the stronger, selecting that stronger signal for consistent, drop-out free performance.

Ready for any application, Radius 100 comes in three distinct versions:

Radius 100—Switching Diversity receiver and handheld dynamic vocal microphone transmitter
Radius 100L—Switching Diversity receiver, lavaliere microphone and wireless belt-pack transmitter
Radius 100H—Switching Diversity receiver, headset microphone and wireless belt-pack transmitter

All Radius 100 versions share:

  • Dual-antenna UHF Diversity receiver for increased reliability and signal consistency
  • UHF band operation (520–937.5 MHz)
  • Receiver includes a high-visibility back-lit LCD display: Displays RF frequency and channel, AF and RF signal levels and other critical functions
  • Single-button scan feature for quickly identifying the optimal operating frequency
  • Sync function automatically synchronizes transmitter and receiver frequency
  • Squelch control for minimizing background noise during silent periods
  • Front-panel rotary volume control
  • Balanced XLR and unbalanced ¼-inch mic or line-level outputs


  • The Radius 200 family utilizes an even more sophisticated diversity system, called True Diversity. Alto’s True Diversity receiver design is absolutely state-of-the-art. Radius 200’s True Diversity system improves upon the Radius 100’s already outstanding performance, because it utilizes two separate receiver sections as well as two antenna systems. The unit constantly polls both receivers and the signals at the antennae, to instantly and seamlessly select the stronger signal. This is what “bulletproof” wireless microphone performance sounds like.

    The Radius 200 also comes in three versions, all True Diversity:

    Radius 200 – True Diversity receiver and hand-held dynamic vocal microphone transmitter
    Radius 200L – True Diversity receiver, lavaliere microphone and wireless belt-pack transmitter
    Radius 200H – True Diversity receiver, headset microphone and wireless belt-pack transmitter

    All Radius 200 versions share:

    • Dual-antenna/dual receiver True Diversity design for mission-critical, dropout-free operation
    • UHF band operation (520–937.5 MHz)
    • Receiver includes a high-visibility back-lit LCD display - Displays RF frequency and channel, AF and RF signal levels and other critical functions
    • Single-button scan feature for quickly identifying the optimal operating frequency
    • Sync function automatically synchronizes transmitter and receiver frequency
    • Squelch control for minimizing background noise during silent periods
    • Front-panel rotary volume control
    • Balanced XLR and unbalanced ¼-inch mic or line-level outputs


    “Alto Professional is all about delivering the very highest performance, innovation and reliability to the professional performer. Our new Radius 100 and 200 diversity wireless microphone families are perfect examples of Alto Professional’s commitment to the uncompromising demands of artists and presenters who cannot accept anything other than the very best,” said Dustin Plumb, Product Manager for Alto Professional.

    Radius pricing will be as follows:

    Radius 100 $199.99
    Radius 100L $199.99
    Radius 100H $199.99

    Radius 200 $249.99
    Radius 200L $249.99
    Radius 200H $249.99

    The Radius 100 and 200 Series will be available in March 2015 at Alto Professional dealers nationwide.

    Please visit us at NAMM, Booth 6700.

    For more information, visit altoprofessional.com.

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    About Alto Professional
    Established in 2000, Alto Professional (altoprofessional.com), manufactures a full line of world-class Live Performance Reinforcement equipment. Using modern manufacturing techniques, cutting-edge DSP technology, and sophisticated design, Alto Professional’s products are precision-engineered to provide both exceptional performance and exceptional value for performing musicians and live sound engineers. Alto Professional is a member of the premier family of brands known as inMusic (inmusicbrands.com).