Bring the audio quality and the comfort of Plantronics headsets to Voice over Internet Protocol (VoIP) softphones with the Plantronics DA40. The DA40 includes a USB-to-headset adapter with crisp, clear sound.

Please also consider the , which features Digital Signal Processing (DSP) for digitally improved sound. Or the , which offers all the same features as the DA55, plus an in-line mute switch and PerSono Pro 2.0 software for great control of voice and audio quality.