Shure Microphone Matching Transformer XLR Female to 1/4" Male

Each SM57 requires an XLR cable to connect it to your chosen output (typically either the input of a mixer or powered speaker). The end that connects to each SM57 should be XLR Female, and your mixer or speaker should have either an XLR inuput (where you can plug in an XLR Male cable termination) or 1/4" input for a 1/4" Male cable termination. In summary, you will need either two XLR F to XLR M cables or two XLR F to 1/4" M cables, depending on what you are plugging the two mics into.

This will work, with the appropriate cables (see links below) , it will reduce mixer output by 50dB, which may then be connected, with the proper cable, to a Mic input. https://www.bhphotovideo.com/c/product/68603-REG/Shure_A15LA_A15LA_Line_Adapter.html https://www.bhphotovideo.com/c/product/133543-REG/Comprehensive_XLRP_SPPS_3ST_EXF_Series_Stereo_1_4.html https://www.bhphotovideo.com/c/product/133524-REG/Comprehensive_XLRJ_MPS_3ST_EXF_Stereo_Mini_Male.html

The 24dB of gain provided by the Shure Microphone Matching Transformer XLR Female to 1/4" Male is achieved when connecting a balanced low-impedance microphone output to an unbalanced high impedance input.

You should be able to use a standard cable to connect the output from the mini mixer to the input on another board. If the connectors you require are XLR female to 1/4" TRS male, you can most likely use a cable such as the Hosa Technology HXS-003 Balanced 3-Pin XLR Female to 1/4" TRS Male Audio Cable (3') - B&H# HOHXS003.

Each SM57 requires an XLR cable to connect it to your chosen output (typically either the input of a mixer or powered speaker). The end that connects to each SM57 should be XLR Female, and your mixer or speaker should have either an XLR inuput (where you can plug in an XLR Male cable termination) or 1/4" input for a 1/4" Male cable termination. In summary, you will need either two XLR F to XLR M cables or two XLR F to 1/4" M cables, depending on what you are plugging the two mics into.

Each SM57 requires an XLR cable to connect it to your chosen output (typically either the input of a mixer or powered speaker). The end that connects to each SM57 should be XLR Female, and your mixer or speaker should have either an XLR inuput (where you can plug in an XLR Male cable termination) or 1/4" input for a 1/4" Male cable termination. In summary, you will need either two XLR F to XLR M cables or two XLR F to 1/4" M cables, depending on what you are plugging the two mics into.

Not sure, but I doubt it. What the transformer does is raise a low impedance microphone signal to instrument level impedance, so that you can plug your mic into the instrument jack of a guitar amp or that sort of thing.