multichannel audio
I found this
Amazon.com: LINE5 Multi-channel Headphone Audio Signal Switcher Stereo Headphone Amplifier Black: Home Audio & Theater https://www.amazon.com/LINE5-Multi-channel-Headphone-Switcher-Amplifier/dp/B00HA11KFQ/ref=sr_1_5?ie=UTF8&qid=1479834069&sr=8-5&keywords=multichannel+audio
but I think it's for headphones only not mic
any link ** please
would really clear things up
thank you **