With the introduction of the A30 Sigma, designed mainly for call center applications, users finally have a simple solution that is easy to use as well as powerful. Designed to cover a wide variety of telephone systems, the A30 offers superb voice amplification and call clarity. Aside from the standard noise-cancellation, the A30 is designed with a proprietary VoiceEnhancement technology that filters out the caller's background noise as well. Callers from the noisest environments can be clearly heard with an enhancement only to the human voiceband. Other features of the A30 includes headset/handset switch, quick microphone mute and headset hanger.

Enhanced compatibility to fit with most telephones
Voice-Enhancement Function to remove background noise
Simple and direct interface for business applications
Low power consumption for longest battery life