Product availability update: Plantronics MX10 audio processor is still available. MX10 multi-device switcher EOL was announced in July 2016, but that has since been reversed. The MX10 Universal Audio Processor connects your single or multi-line telephone and to your PC or external audio device via 2 3.5mm audio plugs.  Sound is heard through any Plantronics traditional QD corded headset. 

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