AmpliVox Multimedia Amplifier Black. The S805A works with most microphones including condenser dynamic and wireless. The condenser (electret) input includes phantom power. All 3 mic inputs can be used simultaneously. Tape record your mixed multimedia presentation as it is happening Or provide a mixed output to the room's built-in sound system that you control. Connect (with optional Y-jacks) up to four speakers. Power with 10 D-cell alkaline batteries (not included) for up to 200 hours or Optional 1460 AC adapter or S1465 Rechargeable NiCad Battery Pack (requires S1460 AC adapter). Specifications for AmpliVox Multimedia Amplifier: Manufacturer: AmpliVox Included Accessories: S805A Multimedia Stereo Amplifier Color: Black Features of AmpliVox Multimedia Amplifier 50 Watt Multimedia Stereo Amplifier 3 mic inputs (dynamic condenser WIRELESS) Line-in with separate Volume and Tone controls for CD/Computer Projector Line-out to record presentation in real time 2 speaker jacks Package Contents: AmpliVox Multimedia Amplifier S805A Multimedia Stereo Amplifier AmpliVox S805A: Multimedia Amplifier Black