The TSD-MIX41 4x1 Mic/Line Mixer from Atlas Sound is designed for applications where multiple mic or line sources need to be sub mixed or summed. In house of worship applications the TSD-MIX41 can be used to combine similar sources such as choir microphones to a single mixer channel. The unit also works as a stand-alone mic/line mixer that can be interfaced with Atlas Sound amplifiers. Other applications include restaurants, conference rooms, and schools. Each input is mic/line switchable with phantom power provided for condenser microphones. The low noise internal mic preamps ensure clarity and quiet operation without unwanted coloration. A 12dB/octave high pass filter at 125Hz also is available on each input to minimize bass rumble and low frequency feedback. A 24VDC power supply (available separately) is required for operation.