The sound source (guitar/keyboard/etc) outputs certain values (sometimes fixed, sometimes varied) of frequencies, amperes, volts, watts, impedance, joules, ohms, and decibels in order to deliver its audio signal to another device.Instead of going directly to that one device, let's say we used a y-splitter to deliver this signal to two devices simultaneously. Doing this will in some way, shape, or form affect one or more of the aforementioned values. Sometimes the affects on the values will be audibly recognizable through the presence of distortion, hiss, hum, abnormally low volumes, etc. In addition, sometimes the affects on values will be unrecognizable but will negatively affect the target device by not having the appropriate impedance, amperes, or whatever.

For More Details:-
Video content production agency