Item Description: Note : This is only converter . No built-in PreAmp
It only adapter, con't provide the power. if your Shure / Sennheiser microphones working need DC power. so your system also need provide the power.
This adapter Connection Method ：
Shure FeMale 4pin Connection Method is: Pin 1 is " - " , Pin 2, Pin 3 and Pin 4 is " + " , and Pin 2 3 4 interconnect
3.5mm FeMale is standard lock.
Please check your power supply unit system or microphones, if not same, need to change the connection yourself. you need open Reconnect it . If you can't operate, Please don't buy.