Shure A85F Transformer; Low Z, Female XLR to High Z 1/4" Phone Plug

The A85F is a low-to-high impedance microphone matching transformer used to connect a balanced low impedance microphone output to an unbalanced high impedance input on a mixer or recorder. It presents a female XLR at the microphone end and a high impedance 1/4 inch phone plug at the destination, making a professional microphone usable with consumer gear, guitar amplifiers, and older recorders.