Line out jack for a tape recorder. You can record your performance as it is happening. All 3 mic inputs (dynamic, condenser, wireless) can be used at the same time. Choice of headset & lapel mic with beltpack transmitter or handheld wireless mic. Auxiliary input jack for a CD player, tape player or computer sound system. Capture your audience�s attention with a mixed media presentation by adding music and sound effects. Separate tone and volume controls. 2 speaker jacks for a total of 4 speakers possible (using Y-connectors). Great for true stereo sound and for amplifying over a wider area. Never run out of power! 10 D-cell alkaline batteries (not included) provide up to 200 hrs. of talk time.