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

low Z to high Z line matching transformer can you contain your excitement folks or what Mac I tell you Apogee knowledgebase were respected company we can find this anywhere it's an adapter with a female XLR on one end and the male quarter inch jack original switch craft there I got from America slide back in the day fender any on the other end it connects the low impedance signal of a modern microphone to a high impedance providing additional gain for optimal signal level into high impedance inputs why what's the practical use if I may if you want to plug your mic into an instrument input guitar bass or key but amplifier any of those jacks sockets or into an old pre eighties type equipment which have jacks as well if you don't use a converter you will suffer low output and muffled tone most of you probably don't to do that but there's Lee why would you do the above where an important mi