Radio Shack 4 channel microphone mixer

The 32-1106 is a 4-Channel Stereo Microphone Mixer, perfect for mixing sound from up to four audio input sources, such as a microphone, CD player, tuner, cassette player, or VCR.

The 32-1106 feature set includes:
Eight Input Jacks — allows you to connect up to two stereo input sources (such as a tuner, cassette player, or CD player) or four mono input sources, and up to four microphones.
Four Output Jacks — let's you connect up to two stereo output sources (such as an amplifier or a cassette recorder) or four mono output sources.
Four Wide-Range Sliding Controls — adjust the sound level of the four channels to achieve the right mix for playing through your speaker system or for recording.
Stereo/Monaural Modes — Allows you to select either stereo or monaural output.
Dual Power Capability — lets you power your mixer from either a 9-volt battery or from an AC adapter (not included)
Battery Low Indicator — lets you know when the battery needs to be replaced.