Why you need the Hosa MIT-435 Impedance Transformer, XLR3F to 1/4 in TS: This adaptor is made to match 200R output impedance to 50K input impedance, perfect for connecting a microphone to hi-Z instrument jack. Features: • This adaptor is designed to match 200R output impedance to 50K input impedance. It is ideal for connecting a microphone to hi-Z instrument jack • Maximizes signal fidelity when using impedance mismatched gear • Minimizes high frequency and level loss caused by signal reflections • Eliminates noise and hum caused by an impedance mismatch • Connector(s): XLR3F to 1/4 in TS