Specifications
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... Input Impedance 150 +/- 25% SUPRAPLUS DYNAMIC KEY FEATURES: Mission-critical reliability and comfort. All rights reserved. Adjustable microphone boom. SupraPlus not only meets or exceeds all specifications set by our existing world-class professional headsets, but this headset also delivers superior all Plantronics dual channel Amplifiers and USB-PTT adapters. Dynamic noise-cancelling microphone. Extended frequency response improves intelligibility. Stays in U.S.A. Plantronics compatibility. Plantronics Inc. 345 Encinal Street / Santa...
... Input Impedance 150 +/- 25% SUPRAPLUS DYNAMIC KEY FEATURES: Mission-critical reliability and comfort. All rights reserved. Adjustable microphone boom. SupraPlus not only meets or exceeds all specifications set by our existing world-class professional headsets, but this headset also delivers superior all Plantronics dual channel Amplifiers and USB-PTT adapters. Dynamic noise-cancelling microphone. Extended frequency response improves intelligibility. Stays in U.S.A. Plantronics compatibility. Plantronics Inc. 345 Encinal Street / Santa...