Guitar combo amps with pre-out

 

— the presence of this output in the combo amplifier allows you to connect additional acoustics to it — for example, active speakers or passive speakers with a separate power amplifier. At the same time, the own acoustics of the “combo”, usually, continues to work in the usual mode parallel to the external one.

This function is intended primarily for situations where the volume of the combo amplifier itself is not enough — for example, for mass concerts, where it is possible to connect additional equipment. In addition, the line output can also be used to record audio from an amplifier. The specific jacks used for this output vary from 3.5mm mini-jack to professional balanced XLR, depending on the model.